57145666 has 8 divisors (see below), whose sum is σ = 86751504. Its totient is φ = 28228500.

The previous prime is 57145657. The next prime is 57145703. The reversal of 57145666 is 66654175.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171960 + ... + 172291.

It is an arithmetic number, because the mean of its divisors is an integer number (10843938).

Almost surely, 2^57145666 is an apocalyptic number.

57145666 is a deficient number, since it is larger than the sum of its proper divisors (29605838).

57145666 is a wasteful number, since it uses less digits than its factorization.

57145666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344336.

The product of its digits is 151200, while the sum is 40.

The square root of 57145666 is about 7559.4752463382. The cubic root of 57145666 is about 385.1776680401.

The spelling of 57145666 in words is "fifty-seven million, one hundred forty-five thousand, six hundred sixty-six".