45904257 has 12 divisors (see below), whose sum is σ = 75778560. Its totient is φ = 26230968.

The previous prime is 45904249. The next prime is 45904321. The reversal of 45904257 is 75240954.

It is not a de Polignac number, because 45904257 - 2³ = 45904249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45904357) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 364257 + ... + 364382.

It is an arithmetic number, because the mean of its divisors is an integer number (6314880).

Almost surely, 2^45904257 is an apocalyptic number.

It is an amenable number.

45904257 is a deficient number, since it is larger than the sum of its proper divisors (29874303).

45904257 is a wasteful number, since it uses less digits than its factorization.

45904257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728652 (or 728649 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 45904257 is about 6775.2680389782. The cubic root of 45904257 is about 358.0560262076.

The spelling of 45904257 in words is "forty-five million, nine hundred four thousand, two hundred fifty-seven".