The slapping scene between Rishi Kapoor and Padmini Kolhapure took 8 retakes.
Raj Kapoor traveling to Amsterdam to shoot the song and also to procure ideas for his upcoming films . Only four or five people travelled to Amsterdam including rishi Kapoor and padmini...Raj Kapoor would love to visit the red light district each day after the shoot
Prem Rog was listed by Cosmopolitan magazine as one of their top ten 'Most Romantic Films Ever'
Raj Kapoor was known to show his Heroine's in Glamours way by doing lot of skin show but he created a non Glamours look for Padmini Kolhapure in the film.
Padmini Kolhapure was just 17 when she did the Film she remains the youngest actress to win individually Filmfare best actress award at 17,Dimple Kapadia had won for Bobby 1973 at 17 but she had shared it with Jaya Bachchan for Abhimaan 1973.