56172023 has 2 divisors, whose sum is σ = 56172024. Its totient is φ = 56172022.

The previous prime is 56172019. The next prime is 56172079. The reversal of 56172023 is 32027165.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56172023 - 2² = 56172019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56171983 and 56172001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56172223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28086011 + 28086012.

It is an arithmetic number, because the mean of its divisors is an integer number (28086012).

Almost surely, 2^56172023 is an apocalyptic number.

56172023 is a deficient number, since it is larger than the sum of its proper divisors (1).

56172023 is an equidigital number, since it uses as much as digits as its factorization.

56172023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 56172023 is about 7494.7997304798. The cubic root of 56172023 is about 382.9775839194.

Adding to 56172023 its reverse (32027165), we get a palindrome (88199188).

The spelling of 56172023 in words is "fifty-six million, one hundred seventy-two thousand, twenty-three".