Fait général: 51070 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 51070 is an uninteresting number.
Culture générale: 51070 is an unremarkable number.
Date historique: October 28th is the day in 97 that Emperor Nerva is forced by the Praetorian Guard, to adopt general Marcus Ulpius Trajanus as his heir and successor.