Salaamun Alaykum
In addition to below, it should be noted that the Messenger (pbuh) is the addressee in many parts of the Qur'an, meaning that much of the Qur'an speaks directly to Prophet, albeit not always mentioned by name. Additionally, other parts of the Qur'an make third-person references to the Messenger (pbuh).
Taking these facts into consideration, we can conclude that the Prophet Muhammad (pbuh) is mentioned more than any other prophet in the Qur'an.
With Salaams