Fatto generale: 2457 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 2457 is an unremarkable number.
Trivia: 2457 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: September 22nd is the day in 1939 that Joint victory parade of Wehrmacht and Red Army in Brest-Litovsk at the end of the Invasion of Poland.