Fatto generale: 10591 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 10591 is a boring number.
Trivia: 10591 is an unremarkable number.
Data storica: December 29th is the day in 1992 that Fernando Collor de Mello, president of Brazil, tries to resign amidst corruption charges, but is then impeached.