57172855 has 8 divisors (see below), whose sum is σ = 68651712. Its totient is φ = 45708768.

The previous prime is 57172847. The next prime is 57172873. The reversal of 57172855 is 55827175.

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

It is a cyclic number.

It is not a de Polignac number, because 57172855 - 2³ = 57172847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8482 + ... + 13648.

It is an arithmetic number, because the mean of its divisors is an integer number (8581464).

Almost surely, 2^57172855 is an apocalyptic number.

57172855 is a deficient number, since it is larger than the sum of its proper divisors (11478857).

57172855 is a wasteful number, since it uses less digits than its factorization.

57172855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7385.

The product of its digits is 98000, while the sum is 40.

The square root of 57172855 is about 7561.2733715956. The cubic root of 57172855 is about 385.2387454929.

The spelling of 57172855 in words is "fifty-seven million, one hundred seventy-two thousand, eight hundred fifty-five".