John Glenn named his Mercury-Atlas 6 capsule Friendship 7. On February 20, 1962, he flew this spacecraft to become the first American to orbit the Earth, completing three successful orbits during his 4-hour, 55-minute mission. Glenn chose "Friendship" and added "7" to honor the original seven American astronauts selected for Project Mercury.

The dog's name on "Mad About You" was Murray. He was a lovable, slightly dim-witted Collie mix who was a staple of the Buchman household, often known for chasing phantom mice and being walked by the character Nat Ostertag. In real life, the dog was played by a trainer-rescued dog named Maui.

A normal human body (somatic) cell contains 46 chromosomes, arranged in 23 pairs. These pairs consist of 22 pairs of autosomes and one pair of sex chromosomes (XX or XY), with one chromosome in each pair inherited from each biological parent

The original code name for the Chevrolet Camaro during its development in 1965 and early 1966 was the Panther. It was intended to compete with the Ford Mustang and was known as the Panther until just before its official announcement, when Chevrolet adopted the "Camaro" name to fit their "C" letter naming convention

A standard 3x3 Rubik's Cube has 54 colored squares in total, often referred to as "stickers" or "facelets".