Fatto generale: 91520 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 91520 is a boring number.
Trivia: 91520 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: July 28th is the day in 2005 that the Provisional Irish Republican Army calls an end to its thirty year long armed campaign in Northern Ireland.