Fatto generale: 1657 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 1657 is an unremarkable number.
Trivia: 1657 is an uninteresting number.
Data storica: July 14th is the day in 1957 that Rawya Ateya takes her seat in the National Assembly of Egypt, thereby becoming the first female parliamentarian in the Arab world.