Which president served from 1945 to 1953?

Which number president was Harry S. Truman? Who succeeded Harry S. Truman as President of the United States? Who was President immediately before Harry S. Truman? Which political party did President Harry S. Truman belong to? In what year did Harry S. Truman first take office as President? Who served as Vice President under Harry S. Truman? Under which president did Alben W. Barkley serve as Vice President? Who was First Lady during Harry S. Truman's presidency?