Fait général: 20546 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 20546 is an unremarkable number.
Culture générale: 20546 is an unremarkable number.
Date historique: April 1st is the day in 1976 that the Jovian–Plutonian gravitational effect hoax is first reported by British astronomer Patrick Moore.