Obama turns 52 on Sunday and is spending part of the day at the Camp David presidential retreat in Maryland.
The White House said little about how he's celebrating. He played golf Saturday with friends from his days in Hawaii and Chicago. Some of them joined him at Camp David.
Obama is scheduled to return to the White House on Sunday afternoon. His week ahead includes travel to the West Coast to discuss plans to help homeowners, appear on "The Tonight Show" with Jay Leno and visit with troops at Camp Pendleton.
He also has a White House meeting Thursday with the prime minister of Greece.