46 (number)

46 is the natural number following 45 and preceding 47.

In mathematics

46 is a composite number, a centered triangular number, and a Wedderburn-Etherington number, and an Erdős–Woods number.

In sports

The number of mountains in the 46 peaks of the Adirondack mountain range. People who have climbed all of them are called "forty-sixers".
The number 46 is used to identify Valentino Rossi. The number is retired in the MotoGP after Rossi's retirement in 2022.
In other fields

Forty-six is also:

Because 46 in Japanese can be pronounced as "yon roku", and "yoroshiku" means "my best regards" in Japanese, people sometimes use 46 for greeting.
An international calling code for Sweden.