The midfielder, signed from Napoli, explained how the number had a significant reverence in Brazil and that, more plainly, he just liked the number.
Jorginho told Chelsea’s official website: “I think it is a strong number, and in Brazilian football it is a number that is well-respected and has an important place in the history of football, but above all it is just a number I like.
“I think it is a beautiful number. And also because great players in the past like Falcao from Brazil wore it.”
The 26-year-old Italian international will be hoping to impress at Stamford Bridge next season under new boss Maurizio Sarri and help Chelsea win silverware and get back into the Champions League spots.
Jorginho started out at Verona, making his debut there in 2010. He then signed for Napoli in 2014 before being snapped up by the west Londoners this summer.
He made 160 appearances for Napoli, scoring six goals. Jorginho now joins up with his former coach at Napoli after sealing the £50m move.
The Brazilian-born defensive midfielder also has eight caps for Italy.
Chelsea’s next game is against Perth Glory on their pre-season tour of Australia on July 23 before fixtures against Inter, Arsenal and Man City in the Charity Shield on August 5.
A final match against Lyon follows before their domestic season starts against Huddersfield on August 11.