The Roman numeral "CDLXXI" represents the number 471. In this numeral, "CD" stands for 400, "LXX" represents 70, and "I" signifies 1. Roman numerals are a numeral system originating from ancient Rome, using combinations of letters from the Latin alphabet. Roman numerals are often used today in various contexts, such as in the naming of monarchs and popes, or to denote chapters and volumes in books. Understanding how to read and write these numerals can be helpful in interpreting historical texts and artifacts related to ancient Rome.