Hecho matemático: 5615 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 5615 is an unremarkable number.
Fecha histórica: May 16th is the day in 1988 that a report by United States' Surgeon General C. Everett Koop states that the addictive properties of nicotine are similar to those of heroin and cocaine.