Fait général: 53820 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 53820 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Culture générale: 53820 is an unremarkable number.
Date historique: May 9th is the day in 1904 that the steam locomotive City of Truro becomes the first steam engine in Europe to exceed 100 mph (160 km/h).