Fatto generale: 5310 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 5310 is an uninteresting number.
Trivia: 5310 is an unremarkable number.
Data storica: July 15th is the day in 1959 that the steel strike of 1959 begins, leading to significant importation of foreign steel for the first time in United States history.