Muhammad in the Quran

The name "Muhammad" is mentioned four times in the Quran and the name "Ahmad" (another variant of the name of the Islamic prophet, Muhammad) is mentioned one time. However, Muhammad is also referred to with various titles such as the Messenger of Allah, Prophet, unlettered, etc. and many verses about Muhammad refer directly or indirectly to him. Also, the name of chapter (Surah) 47 of the Quran is "Muhammad".