Fatto generale: 5331 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 5331 is an uninteresting number.
Trivia: 5331 is an unremarkable number.
Data storica: August 5th is the day in 1884 that the cornerstone for the Statue of Liberty is laid on Bedloe's Island (now Liberty Island) in New York Harbor.