Fait général: 20045 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 20045 is a boring number.
Culture générale: 20045 is an unremarkable number.
Date historique: November 17th is the day in 1820 that Captain Nathaniel Palmer becomes the first American to see Antarctica (the Palmer Peninsula is later named after him).