The Spanish phrase "seguro social número" translated in English as "Social Security number." The Spanish word "seguro" means "sure" or "secure," "social" means "social" and "número" is "number."
A Social Security number is a unique individual number given to U.S. citizens, permanent residents and temporary residents with a work visa. The SSN helps the government keep track of employment and earnings records to collect Social Security benefits. It also serves other identification purposes for services such as bank and credit card accounts. The SSN is a nine-digit number in a 000-00-0000 format that is printed on a Social Security card.