Hecho general: 83541 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 83541 is an uninteresting number.
Trivia: 83541 is an uninteresting number.
Fecha histórica: September 22nd is the day in 1939 that Joint victory parade of Wehrmacht and Red Army in Brest-Litovsk at the end of the Invasion of Poland.