Fatto generale: 75813 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 75813 is an uninteresting number.
Trivia: 75813 is an uninteresting number.
Data storica: July 27th is the day in 1189 that Friedrich Barbarossa arrives at Niš, the capital of Serbian King Stefan Nemanja, during the Third Crusade.