56572172451 has 6 divisors (see below), whose sum is σ = 81715360220. Its totient is φ = 37714781628.

The previous prime is 56572172441. The next prime is 56572172473. The reversal of 56572172451 is 15427127565.

56572172451 is a `hidden beast` number, since 5 + 6 + 572 + 1 + 7 + 24 + 51 = 666.

It is not a de Polignac number, because 56572172451 - 2¹⁹ = 56571648163 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56572172397 and 56572172406.

It is not an unprimeable number, because it can be changed into a prime (56572172401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3142898461 + ... + 3142898478.

Almost surely, 2^56572172451 is an apocalyptic number.

56572172451 is a deficient number, since it is larger than the sum of its proper divisors (25143187769).

56572172451 is a wasteful number, since it uses less digits than its factorization.

56572172451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6285796945 (or 6285796942 counting only the distinct ones).

The product of its digits is 588000, while the sum is 45.

The spelling of 56572172451 in words is "fifty-six billion, five hundred seventy-two million, one hundred seventy-two thousand, four hundred fifty-one".