Fait mathématique: 5327 is a value of n for which 2n and 7n together use each digit exactly once.
Culture générale: 5327 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: August 1st is the day in 2007 that the I-35W Mississippi River Bridge spanning the Mississippi River in Minneapolis, Minnesota, collapses during the evening rush hour.