457221957 has 4 divisors (see below), whose sum is σ = 609629280. Its totient is φ = 304814636.

The previous prime is 457221943. The next prime is 457221959. The reversal of 457221957 is 759122754.

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 457221957 - 2⁶ = 457221893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (457221959) 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, 76203657 + ... + 76203662.

It is an arithmetic number, because the mean of its divisors is an integer number (152407320).

Almost surely, 2^457221957 is an apocalyptic number.

It is an amenable number.

457221957 is a deficient number, since it is larger than the sum of its proper divisors (152407323).

457221957 is a wasteful number, since it uses less digits than its factorization.

457221957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152407322.

The product of its digits is 176400, while the sum is 42.

The square root of 457221957 is about 21382.7490515135. The cubic root of 457221957 is about 770.3871426999.

The spelling of 457221957 in words is "four hundred fifty-seven million, two hundred twenty-one thousand, nine hundred fifty-seven".