General fact: 5878 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 5878 is an unremarkable number.
Trivia: 5878 is a boring number.
Historical date: February 3rd is the day in 1112 that Ramon Berenguer III of Barcelona and Douce I of Provence marry, uniting the fortunes of those two states.