4546

4546 = 2 x 2273.

The number 4546 and its prime factors use each of the digits from 2 to 7 (A058760).

4546 is a member of the sequence in which each term is the sum of the previous term and the square of the term before that (A000278).

4546 has a representation as a sum of two squares: 4546 = 39² + 55².

Source: OEIS