Hecho matemático: 53206 is an uninteresting number.
Trivia: 53206 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fecha histórica: September 2nd is the day in 1970 that NASA announces the cancellation of two Apollo missions to the Moon, Apollo 15 (the designation is re-used by a later mission), and Apollo 19.