70-year-old Donald Trump is US oldest president at #inuaguration

The newly sworn in President Donald Trump has become the oldest person to assume office as United States president counting from the day of inauguration.

Donald Trump was 70 years, 220 days old when he assumed office.

Close to him was Ronald Reagan, who was the oldest in office, at the age of 77 years, 349 days when he left office.

The oldest living president is George H. W. Bush, born June 12, 1924 (aged 92 years, 222 days).

Jimmy Carter is the second-oldest, 111 days younger than Bush. Carter was born October 1, 1924 (aged 92 years, 111 days).

The youngest living former president is Bill Clinton, born August 19, 1946 (aged 70 years, 154 days), followed by George W. Bush, 44 days older, born July 6, 1946 (aged 70 years, 198 days).

The youngest living president is Barack Obama, born August 4, 1961 (aged 55 years, 169 days).

The longest-lived president was Gerald Ford, who died at the age of 93 years and 165 days. Ronald Reagan was the second longest-lived, 45 days fewer than Ford. The shortest-lived president was John F. Kennedy, who was assassinated at the age of 46 years and 177 days.

The shortest-lived president to die a natural death was James K. Polk, who died of cholera at the age of 53 years and 225 days. The president with the longest retirement is Jimmy Carter, at 13,149 days.

Carter achieved this record on September 8, 2012, surpassing Herbert Hoover, who died 11,553 days after leaving the presidency. The president with the shortest retirement was James K. Polk, who died 103 days after leaving the presidency.

The average age of accession is 54 years and 11 months, which falls between Herbert Hoover (22nd) and Lyndon B. Johnson (23rd).

The youngest person to assume office was Theodore Roosevelt, who became president following William McKinley‘s assassination, at the age of 42 years, 322 days.

The youngest president elected to office was John F Kennedy, who assumed office at the age of 43 years, 236 days, who was also the youngest to leave office when he was assassinated, at the age of 46 years, 177 days, this according to Wikipedia.