57172561951 has 8 divisors (see below), whose sum is σ = 57812227200. Its totient is φ = 56534523672.

The previous prime is 57172561891. The next prime is 57172561969. The reversal of 57172561951 is 15916527175.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57172561951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57172561895 and 57172561904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57172567951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 336001 + ... + 476698.

It is an arithmetic number, because the mean of its divisors is an integer number (7226528400).

Almost surely, 2^57172561951 is an apocalyptic number.

57172561951 is a deficient number, since it is larger than the sum of its proper divisors (639665249).

57172561951 is a wasteful number, since it uses less digits than its factorization.

57172561951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813485.

The product of its digits is 661500, while the sum is 49.

The spelling of 57172561951 in words is "fifty-seven billion, one hundred seventy-two million, five hundred sixty-one thousand, nine hundred fifty-one".