LOS ANGELES — Tom Lehrer, the popular and erudite song satirist who lampooned marriage, politics, racism and the Cold War, then largely abandoned his music career to return to teaching math at Harvard and other universities, has died. He was 97.

Tom Lehrer gained a popular following in the 1950s and ’60s lampooning marriage, politics, racism ,and the Cold War, and then largely abandoned his music career to return to teaching math at Harvard and other universities.

Tom Lehrer, a social and political satirist who amassed a devoted following in the 1950s and 1960s for routines featuring blithely subversive musical numbers such as “So Long Mom (A Song for World War III),