Which number president was Franklin D. Roosevelt?

Who served as Vice President under Herbert Hoover? Under which president did Charles Curtis serve as Vice President? Who was First Lady during Herbert Hoover's presidency? Lou Hoover was married to which president? Who succeeded Franklin D. Roosevelt as President of the United States? Who was President immediately before Franklin D. Roosevelt? Which president served from 1933 to 1945? In what year did Franklin D. Roosevelt first take office as President?