Fatto matematico: 2571 is the smallest number with the property that its first 7 multiples contain the digit 1.
Trivia: 2571 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: January 14th is the day in 1957 that Jagadguru Kripalu Maharaj was named fifth Jagad guru (world teacher) after giving seven days of speeches before 500 Hindu scholars.