Fatto generale: 7551 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 7551 is a value of n for which f(n) + f(n+1) divides s(n) + s(n+1).
Trivia: 7551 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: September 2nd is the day in 1898 that Battle of Omdurman – British and Egyptian troops defeat Sudanese tribesmen and establish British dominance in Sudan.