Fait mathématique: 52729 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Culture générale: 52729 is an uninteresting number.
Date historique: May 13th is the day in 1995 that a 33 years old British mother Alison Hargreaves, became the first woman to conquer Everest without oxygen or the help of sherpas.