57172424 has 8 divisors (see below), whose sum is σ = 107198310. Its totient is φ = 28586208.

The previous prime is 57172403. The next prime is 57172439. The reversal of 57172424 is 42427175.

It can be written as a sum of positive squares in only one way, i.e., 45131524 + 12040900 = 6718^2 + 3470^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3573269 + ... + 3573284.

Almost surely, 2^57172424 is an apocalyptic number.

It is an amenable number.

57172424 is a deficient number, since it is larger than the sum of its proper divisors (50025886).

57172424 is a wasteful number, since it uses less digits than its factorization.

57172424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7146559 (or 7146555 counting only the distinct ones).

The product of its digits is 15680, while the sum is 32.

The square root of 57172424 is about 7561.2448710513. The cubic root of 57172424 is about 385.2377774443.

Adding to 57172424 its reverse (42427175), we get a palindrome (99599599).

The spelling of 57172424 in words is "fifty-seven million, one hundred seventy-two thousand, four hundred twenty-four".