Fait général: 4750 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 4750 is a hexagonal pyramidal number.
Culture générale: 4750 is a boring number.
Date historique: January 1st is the day in 1995 that the Conference for Security and Co-operation in Europe becomes the Organization for Security and Co-operation in Europe.