General fact: 47504 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 47504 is an uninteresting number.
Trivia: 47504 is an uninteresting number.
Historical date: January 22nd is the day in 1971 that the Singapore Declaration, one of the two most important documents to the uncodified constitution of the Commonwealth of Nations, is issued.