Fatto matematico: 2587 is a value of n for which f(n) + f(n+1) divides s(n) + s(n+1).
Trivia: 2587 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: January 30th is the day in 1911 that the destroyer USS Terry (DD-25) makes the first airplane rescue at sea saving the life of James McCurdy 10 miles from Havana, Cuba.