Fait mathématique: 53779 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Culture générale: 53779 is a boring number.
Date historique: March 29th is the day in 1990 that the Czechoslovak parliament is unable to reach an agreement on what to call the country after the fall of Communism, sparking the so-called Hyphen War.