57105172 has 12 divisors (see below), whose sum is σ = 101426080. Its totient is φ = 28126296.

The previous prime is 57105119. The next prime is 57105173. The reversal of 57105172 is 27150175.

It is a super-2 number, since 2×57105172² = 6522001338299168, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 57105172.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57105173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106272 + ... + 106807.

Almost surely, 2^57105172 is an apocalyptic number.

It is an amenable number.

57105172 is a deficient number, since it is larger than the sum of its proper divisors (44320908).

57105172 is a wasteful number, since it uses less digits than its factorization.

57105172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213150 (or 213148 counting only the distinct ones).

The product of its (nonzero) digits is 2450, while the sum is 28.

The square root of 57105172 is about 7556.7964111785. The cubic root of 57105172 is about 385.0866662711.

The spelling of 57105172 in words is "fifty-seven million, one hundred five thousand, one hundred seventy-two".