57172434 has 32 divisors (see below), whose sum is σ = 130166784. Its totient is φ = 16571280.

The previous prime is 57172403. The next prime is 57172439. The reversal of 57172434 is 43427175.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 57172395 and 57172404.

It is not an unprimeable number, because it can be changed into a prime (57172439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17314 + ... + 20349.

It is an arithmetic number, because the mean of its divisors is an integer number (4067712).

Almost surely, 2^57172434 is an apocalyptic number.

57172434 is an abundant number, since it is smaller than the sum of its proper divisors (72994350).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57172434 is a wasteful number, since it uses less digits than its factorization.

57172434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37702.

The product of its digits is 23520, while the sum is 33.

The square root of 57172434 is about 7561.2455323181. The cubic root of 57172434 is about 385.2377999049.

The spelling of 57172434 in words is "fifty-seven million, one hundred seventy-two thousand, four hundred thirty-four".