Sivakumar is not only a dignified performer, but also a multi-faceted personality. He is a trained painter and an accomplished writer. He recently released his autobiography, Idhu Rajapattai Alla. It is basically in the form of memoirs written in 68 essays. The moving essay on his mother takes up 30 pages. These essays first appeared in Junior Vikatan and were also taken up for comparative studies syllabus of Loyola College. The book has several rare photographs (poet Vali without his beard, K.B. without glasses).

The book is written in a lucid style. Good value for money.