President Barack Obama is our 44th president, but there have actually only been 43 presidents. Grover Cleveland was elected for 2 non-consecutive terms, and is counted twice, as our 22nd and 24th president. 9 of our president's never attended college, and 7 attended Harvard, (the most of any university). The oldest elected president was Reagan, (age 69)and the youngest was Kennedy, (age 43). James  Buchannan was the only bachelor president.  Calvin Coolidge was born on the 4th of July, and John Adams, Thomas Jefferson, and James Monroe, all died on the 4th of July. 8 presidents died in office, and 8 presidents were left-handed. 9 presidents are on U.S. currency, and 6 are on U.S. coins. The tallest president was Abraham Lincoln at 6'4", and the shortest was James Madison at 5'4".