Fatto generale: 13577 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 13577 is a boring number.
Trivia: 13577 is an uninteresting number.
Data storica: March 3rd is the day in 1904 that Kaiser Wilhelm II of Germany becomes the first person to make a sound recording of a political document, using Thomas Edison's phonograph cylinder.