Fatto generale: 4159 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 4159 is 4^{5} + 1^{5} + 5^{5} + 9.
Trivia: 4159 is a boring number.
Data storica: May 21st is the day in 1937 that a Soviet station, North Pole-1, becomes the first scientific research settlement to operate on the drift ice of the Arctic Ocean.