555 95472, usually referred to as "5", is a character in the comic strip Peanuts by Charles M. Schulz. He debuted in 1963, and continued to appear on and off in the strip until 1981. "5" has spiky hair and sometimes wears a shirt with the number five on it. 95472 is the family's "last name", or more specifically their ZIP code. In reality, it is the ZIP code for Sebastopol, California, where Charles M. Schulz was living at the time the character was introduced. "5" has to keep telling his teacher that the accent is on the 4 in his surname. Snoopy is confused as to whether the boy's name is spelled 5 or as the Roman numeral V.
As "5" once explained to Charlie Brown,
his father, morose and hysterical over the preponderance of numbers in
people's lives, had changed all of his family's names to numbers. Asked
if it was Mr. 95472's way of protesting, "5" replied that this was
actually his father's way of "giving in." "5" also has two sisters named
"3" and "4". ("Nice feminine names," in Charlie Brown's sarcastic assessment.) It can be assumed that their parents are named "1" and "2".