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165 (number)

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165
  
166 →

Factorization
  
3 × 5 × 11

Cardinal
  
one hundred sixty-five

Roman numeral
  
CLXV

Ordinal
  
165th(one hundred and sixty-fifth)

Divisors
  
1, 3, 5, 11, 15, 33, 55, 165

165 (one hundred [and] sixty-five) is the natural number following 164 and preceding 166.

Contents

In mathematics

165 is:

  • an odd number, a composite number, and a deficient number.
  • a sphenic number.
  • a tetrahedral number
  • the sum of the sums of the divisors of the first 14 positive integers.
  • a self number in base 10.
  • a palindromic number in binary (101001012) and bases 14 (BB14), 32 (5532) and 54 (3354).
  • a unique period in base 2.

    • In astronomy

  • 165 Loreley is a large Main belt asteroid
  • 165P/LINEAR is a periodic comet in our solar system

    • In the military

  • USNS American Explorer (T-AOT-165) was a United States Navy tanker, part of the U.S. Reserve Fleet, Beaumont, Texas
  • USS Bonita (SS-165) was a United States Navy Barracuda-class submarine during World War II
  • USS Bullock (AK-165) was a United States Navy Alamosa-class cargo ship during World War II
  • USS Counsel (AM-165) was a United States Navy Admirable-class minesweeper during World War II
  • USS Counsel (AM-165) was a United States Navy Haskell-class attack transport during World War II
  • USS Flicker (IX-165) was a United States Navy minesweeper during World War II
  • USS Georgetown (AG-165) was a United States Navy Oxford-class technical research ship following World War II
  • USS Meredith (DD-165) was a United States Navy Wickes class destroyer during World War I
  • USS Parks (DE-165) was a United States Navy Cannon class destroyer escort during World War II
  • USS Prince Georges (AP-165) was a United States Navy Crater-class transport and cargo ship during World War II
  • USS Wenonah (SP-165) was a United States Navy yacht during World War I
  • Caproni Ca.165 Italian fighter aircraft developed before World War II
  • The 165 Squadron, Republic of Singapore Air Force Air Defence Operations Command, Republic of Singapore Air Force

    • In transportation

  • British Rail Class 165
  • The Blériot 165 was a French four-engine biplane airliner of the 1920s
  • The Cessna 165 single-engine plane of the 1930s
  • LOT Polish Airlines Flight 165, en route from Warsaw to Cracow Balice airport crashed during a snowstorm on April 2, 1969

    • In other fields

    165 is also:

  • The year AD 165 or 165 BC
  • 165 AH is a year in the Islamic calendar that corresponds to 781 – 782 CE
  • The atomic number of an element temporarily called Unhexpentium
  • G.165 is a Telecommunication Standardization Sector standard for echo cancellers, used in telephony
  • The human gene Zinc finger protein 165, or ZNF165

    • References

    165 (number) Wikipedia
    (Text) CC BY-SA


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