457922721 has 8 divisors (see below), whose sum is σ = 610922880. Its totient is φ = 305102192.

The previous prime is 457922719. The next prime is 457922723. The reversal of 457922721 is 127229754.

It is an interprime number because it is at equal distance from previous prime (457922719) and next prime (457922723).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 457922721 - 2¹ = 457922719 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 457922721.

It is not an unprimeable number, because it can be changed into a prime (457922723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38841 + ... + 49238.

It is an arithmetic number, because the mean of its divisors is an integer number (76365360).

Almost surely, 2^457922721 is an apocalyptic number.

It is an amenable number.

457922721 is a deficient number, since it is larger than the sum of its proper divisors (153000159).

457922721 is a wasteful number, since it uses less digits than its factorization.

457922721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89815.

The product of its digits is 70560, while the sum is 39.

The square root of 457922721 is about 21399.1289776009. The cubic root of 457922721 is about 770.7805213028.

The spelling of 457922721 in words is "four hundred fifty-seven million, nine hundred twenty-two thousand, seven hundred twenty-one".