164571057 has 48 divisors (see below), whose sum is σ = 280800000. Its totient is φ = 92828736.

The previous prime is 164571023. The next prime is 164571083. The reversal of 164571057 is 750175461.

164571057 is a `hidden beast` number, since 1 + 645 + 7 + 1 + 0 + 5 + 7 = 666.

It is not a de Polignac number, because 164571057 - 2⁶ = 164570993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (164571097) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 274444 + ... + 275042.

It is an arithmetic number, because the mean of its divisors is an integer number (5850000).

Almost surely, 2^164571057 is an apocalyptic number.

It is an amenable number.

164571057 is a deficient number, since it is larger than the sum of its proper divisors (116228943).

164571057 is an equidigital number, since it uses as much as digits as its factorization.

164571057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715 (or 698 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 36.

The square root of 164571057 is about 12828.5251295696. The cubic root of 164571057 is about 548.0049560441.

The spelling of 164571057 in words is "one hundred sixty-four million, five hundred seventy-one thousand, fifty-seven".