Fait général: 56421 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 56421 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Culture générale: 56421 is an uninteresting number.
Date historique: June 22nd is the day in 1911 that George V and Mary of Teck are crowned King and Queen of the United Kingdom of Great Britain and Ireland.