Fatto generale: 2571 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 2571 is the smallest number with the property that its first 7 multiples contain the digit 1.
Trivia: 2571 is an unremarkable number.
Data storica: January 14th is the day in 1960 that the Reserve Bank of Australia, the country's central bank and banknote issuing authority, is established.