Fatto generale: 85580 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 85580 is an uninteresting number.
Trivia: 85580 is a boring number.
Data storica: April 23rd is the day in 1635 that the first public school in the United States, Boston Latin School, is founded in Boston, Massachusetts.