On screen
Cast
45 credited performers
Abhinay Vaddi
Srinivasa Ramanujan
Suhasini Maniratnam
Komalatammal
Bhama
Janaki
Nizhalgal Ravi
Srinivasa Raghavan
Kevin McGowan
G. H. Hardy
Abbas
Prasanta Chandra Mahalanobis
Y. G. Mahendran
S. Narayana Iyer
Sarath Babu
Diwan Bahadur R. Ramachandra Rao I. C. S.
Radha Ravi
Prof. Singaravelu Mudaliar
Thalaivasal Vijay
Sathiyapriya Rayar
Kitty
Seshu Iyer
Anmol
Young Srinivasa Ramanujan
Richard Walsh
Francis Spring
Michael Lieber
John Edensor Littlewood
Delhi Ganesh
Character not listed
Manobala
Krishna Rao
T. P. Gajendran
T. Namberumal Chetty
Madhan Bob
Prof. Krishna Shastri
Lavanya
Character not listed
Mohan Raman
Character not listed
Mohan Sharma
Character not listed
Meera Krishnan
Character not listed
Bala Singh
Character not listed
Boys Rajan
Character not listed
Satish Kumar
Anandhu
Manibharathi
Krishnan
Kalaikumaran
Character not listed
Nali Kuppusamy Chettiyar
Character not listed
Kalyana Malai Mohan
Character not listed
Calcutta Krishnamoorthy
Character not listed
P.V. Ranganathan
Character not listed
Harsh Naik
Chatterjee
Mike Parish
Doctor Charles
Lizzie Bourne
Ms. Gertrude Hardy
Cloudia Swann
Ms. Bourne
Grisham Peters
Character not listed
Colin Tierney
Character not listed
Steve Lester
Character not listed
Marc Rolfe
Character not listed
Terry Billings
Character not listed
Nick Robinson
Character not listed
Deepshika Arora
Character not listed
Bernadette Lemon
Character not listed
Alixandra Kos
Character not listed
Jon Wennington
Professor (Uncredited)