57172561953 has 32 divisors (see below), whose sum is σ = 82900097280. Its totient is φ = 34838035200.

The previous prime is 57172561891. The next prime is 57172561969. The reversal of 57172561953 is 35916527175.

It is not a de Polignac number, because 57172561953 - 2⁸ = 57172561697 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57172561896 and 57172561905.

It is not an unprimeable number, because it can be changed into a prime (57172561153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8724028 + ... + 8730578.

It is an arithmetic number, because the mean of its divisors is an integer number (2590628040).

Almost surely, 2^57172561953 is an apocalyptic number.

It is an amenable number.

57172561953 is a deficient number, since it is larger than the sum of its proper divisors (25727535327).

57172561953 is a wasteful number, since it uses less digits than its factorization.

57172561953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8729.

The product of its digits is 1984500, while the sum is 51.

The spelling of 57172561953 in words is "fifty-seven billion, one hundred seventy-two million, five hundred sixty-one thousand, nine hundred fifty-three".