Hecho matemático: 52780 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 52780 is an uninteresting number.
Fecha histórica: July 3rd is the day in 2001 that a Vladivostok Avia Tupolev Tu-154 jetliner crashes on approach to landing at Irkutsk, Russia killing 145 people.