57172867 has 8 divisors (see below), whose sum is σ = 58113216. Its totient is φ = 56239872.

The previous prime is 57172847. The next prime is 57172873. The reversal of 57172867 is 76827175.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57172867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57172837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15078 + ... + 18484.

It is an arithmetic number, because the mean of its divisors is an integer number (7264152).

Almost surely, 2^57172867 is an apocalyptic number.

57172867 is a deficient number, since it is larger than the sum of its proper divisors (940349).

57172867 is a wasteful number, since it uses less digits than its factorization.

57172867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3677.

The product of its digits is 164640, while the sum is 43.

The square root of 57172867 is about 7561.2741651126. The cubic root of 57172867 is about 385.2387724455.

The spelling of 57172867 in words is "fifty-seven million, one hundred seventy-two thousand, eight hundred sixty-seven".