Fatto generale: 20547 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 20547 is an uninteresting number.
Trivia: 20547 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: April 2nd is the day in 1902 that Dmitry Sipyagin, Minister of Interior of the Russian Empire, is assassinated in the Marie Palace, St Petersburg.