<page_title> List of Heads of state of Bulgaria by longevity </page_title> <section_title> Bulgarian Heads of states' ages </section_title> <table> <cell> Zhelyu Zhelev <col_header> Head of state </col_header> </cell> <cell> 55 years, 151 days <col_header> Age at inauguration </col_header> </cell> </table>
Zhelyu Zhelev became president at the age of 55 years, 151 days.