56172889033 has 2 divisors, whose sum is σ = 56172889034. Its totient is φ = 56172889032.

The previous prime is 56172888973. The next prime is 56172889039. The reversal of 56172889033 is 33098827165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46894768704 + 9278120329 = 216552^2 + 96323^2 .

It is a cyclic number.

It is not a de Polignac number, because 56172889033 - 2⁹ = 56172888521 is a prime.

It is not a weakly prime, because it can be changed into another prime (56172889039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28086444516 + 28086444517.

It is an arithmetic number, because the mean of its divisors is an integer number (28086444517).

Almost surely, 2^56172889033 is an apocalyptic number.

It is an amenable number.

56172889033 is a deficient number, since it is larger than the sum of its proper divisors (1).

56172889033 is an equidigital number, since it uses as much as digits as its factorization.

56172889033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 56172889033 in words is "fifty-six billion, one hundred seventy-two million, eight hundred eighty-nine thousand, thirty-three".