57172445 has 32 divisors (see below), whose sum is σ = 80994816. Its totient is φ = 38272000.

The previous prime is 57172439. The next prime is 57172459. The reversal of 57172445 is 54427175.

It is not a de Polignac number, because 57172445 - 2¹⁴ = 57156061 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 31 ways as a sum of consecutive naturals, for example, 43295 + ... + 44595.

It is an arithmetic number, because the mean of its divisors is an integer number (2531088).

Almost surely, 2^57172445 is an apocalyptic number.

57172445 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

57172445 is a deficient number, since it is larger than the sum of its proper divisors (23822371).

57172445 is a wasteful number, since it uses less digits than its factorization.

57172445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381.

The product of its digits is 39200, while the sum is 35.

The square root of 57172445 is about 7561.2462597114. The cubic root of 57172445 is about 385.2378246115.

The spelling of 57172445 in words is "fifty-seven million, one hundred seventy-two thousand, four hundred forty-five".