Fait mathématique: 4506 is the sum of its proper divisors that contain the digit 5.
Culture générale: 4506 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: May 2nd is the day in 1963 that Berthold Seliger launches a rocket with three stages and a maximum flight altitude of more than 100 kilometres near Cuxhaven.