56856480277 has 2 divisors, whose sum is σ = 56856480278. Its totient is φ = 56856480276.

The previous prime is 56856480253. The next prime is 56856480313. The reversal of 56856480277 is 77208465865.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43686852196 + 13169628081 = 209014^2 + 114759^2 .

It is a cyclic number.

It is not a de Polignac number, because 56856480277 - 2²⁷ = 56722262549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56856480377) 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, 28428240138 + 28428240139.

It is an arithmetic number, because the mean of its divisors is an integer number (28428240139).

Almost surely, 2^56856480277 is an apocalyptic number.

It is an amenable number.

56856480277 is a deficient number, since it is larger than the sum of its proper divisors (1).

56856480277 is an equidigital number, since it uses as much as digits as its factorization.

56856480277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22579200, while the sum is 58.

The spelling of 56856480277 in words is "fifty-six billion, eight hundred fifty-six million, four hundred eighty thousand, two hundred seventy-seven".