Fait général: 5239 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 5239 is an uninteresting number.
Culture générale: 5239 is an uninteresting number.
Date historique: May 5th is the day in 2010 that Mass protests in Greece erupt in response to austerity measures imposed by the government as a result of the Greek debt crisis.