Fatto generale: 5304 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 5304 is an uninteresting number.
Trivia: 5304 is an unremarkable number.
Data storica: July 9th is the day in 1995 that the Navaly church bombing is carried out by the Sri Lankan Air Force killing 125 Tamil civilian refugees.