Fatto generale: 14521 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 14521 is an uninteresting number.
Trivia: 14521 is an uninteresting number.
Data storica: October 3rd is the day in 2008 that the Emergency Economic Stabilization Act of 2008 for the US financial system is signed by President Bush.