Fait général: 1652 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 1652 is a member of the Fibonacci-type sequence starting with 4 and 9.
Culture générale: 1652 is a boring number.
Date historique: July 9th is the day in 1776 that George Washington ordered the Declaration of Independence to be read out loud to members of the Continental Army in New York City for the first time.