457902221 has 4 divisors (see below), whose sum is σ = 523316832. Its totient is φ = 392487612.

The previous prime is 457902167. The next prime is 457902229. The reversal of 457902221 is 122209754.

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 cyclic number.

It is not a de Polignac number, because 457902221 - 2¹⁸ = 457640077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (457902229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32707295 + ... + 32707308.

It is an arithmetic number, because the mean of its divisors is an integer number (130829208).

Almost surely, 2^457902221 is an apocalyptic number.

It is an amenable number.

457902221 is a deficient number, since it is larger than the sum of its proper divisors (65414611).

457902221 is an equidigital number, since it uses as much as digits as its factorization.

457902221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65414610.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 457902221 is about 21398.6499807815. The cubic root of 457902221 is about 770.7690191899.

The spelling of 457902221 in words is "four hundred fifty-seven million, nine hundred two thousand, two hundred twenty-one".