56172455239 has 2 divisors, whose sum is σ = 56172455240. Its totient is φ = 56172455238.

The previous prime is 56172455191. The next prime is 56172455347. The reversal of 56172455239 is 93255427165.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56172455239 - 2¹⁹ = 56171930951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56172455192 and 56172455201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56172455639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28086227619 + 28086227620.

It is an arithmetic number, because the mean of its divisors is an integer number (28086227620).

Almost surely, 2^56172455239 is an apocalyptic number.

56172455239 is a deficient number, since it is larger than the sum of its proper divisors (1).

56172455239 is an equidigital number, since it uses as much as digits as its factorization.

56172455239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268000, while the sum is 49.

The spelling of 56172455239 in words is "fifty-six billion, one hundred seventy-two million, four hundred fifty-five thousand, two hundred thirty-nine".