457580921 has 4 divisors (see below), whose sum is σ = 522949632. Its totient is φ = 392212212.

The previous prime is 457580897. The next prime is 457580923. The reversal of 457580921 is 129085754.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-457580921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (457580923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32684345 + ... + 32684358.

It is an arithmetic number, because the mean of its divisors is an integer number (130737408).

Almost surely, 2^457580921 is an apocalyptic number.

It is an amenable number.

457580921 is a deficient number, since it is larger than the sum of its proper divisors (65368711).

457580921 is an equidigital number, since it uses as much as digits as its factorization.

457580921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65368710.

The product of its (nonzero) digits is 100800, while the sum is 41.

The square root of 457580921 is about 21391.1411804046. The cubic root of 457580921 is about 770.5886997388.

The spelling of 457580921 in words is "four hundred fifty-seven million, five hundred eighty thousand, nine hundred twenty-one".