Fatto generale: 17503 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 17503 is an unremarkable number.
Trivia: 17503 is an uninteresting number.
Data storica: December 2nd is the day in 1988 that Benazir Bhutto is sworn in as Prime Minister of Pakistan, becoming the first woman to head the government of an Islam-dominated state.