Fait mathématique: 7549 is the largest known prime p where no numbers of the form p-n^{2} are prime.
Culture générale: 7549 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: August 31st is the day in 1986 that Aeroméxico Flight 498 collides with a Piper PA-28 over Cerritos, California, killing 67 in the air and 15 on the ground.