Hecho general: 5209 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 5209 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 5209 is a boring number.
Fecha histórica: April 5th is the day in 1792 that U.S. President George Washington exercises his authority to veto a bill, the first time this power is used in the United States.