half way mark
- it’s the smallest number that can be expressed as the sum of two non-zero squares in two different ways
- In nuclear physics, 50 is considered the fifth “magic number”—a number of nucleons (protons or neutrons) that can be arranged into complete, stable shells within an atom’s nucleus.
- There are exactly 50 different ways to make 50 cents using standard US coins (1-cent, 5-cent, 10-cent, 25-cent, and 50-cent coins).