456971557 has 16 divisors (see below), whose sum is σ = 538771072. Its totient is φ = 379494720.

The previous prime is 456971477. The next prime is 456971563. The reversal of 456971557 is 755179654.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-456971557 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 456971557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (456971597) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20623 + ... + 36595.

It is an arithmetic number, because the mean of its divisors is an integer number (33673192).

Almost surely, 2^456971557 is an apocalyptic number.

It is an amenable number.

456971557 is a deficient number, since it is larger than the sum of its proper divisors (81799515).

456971557 is a wasteful number, since it uses less digits than its factorization.

456971557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16108.

The product of its digits is 1323000, while the sum is 49.

The square root of 456971557 is about 21376.8930623699. The cubic root of 456971557 is about 770.2464815007.

The spelling of 456971557 in words is "four hundred fifty-six million, nine hundred seventy-one thousand, five hundred fifty-seven".