Fatto matematico: 5851 is a value of n for which n, n^{2}, and n^{3} have the same digit sum.
Trivia: 5851 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: January 7th is the day in 1991 that Roger Lafontant, former leader of the Tonton Macoutes in Haiti under François Duvalier, attempts a coup d'état, which ends in his arrest.