56261016257 has 2 divisors, whose sum is σ = 56261016258. Its totient is φ = 56261016256.

The previous prime is 56261016241. The next prime is 56261016311. The reversal of 56261016257 is 75261016265.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46766657536 + 9494358721 = 216256^2 + 97439^2 .

It is a cyclic number.

It is not a de Polignac number, because 56261016257 - 2⁴ = 56261016241 is a prime.

It is not a weakly prime, because it can be changed into another prime (56261016457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28130508128 + 28130508129.

It is an arithmetic number, because the mean of its divisors is an integer number (28130508129).

Almost surely, 2^56261016257 is an apocalyptic number.

It is an amenable number.

56261016257 is a deficient number, since it is larger than the sum of its proper divisors (1).

56261016257 is an equidigital number, since it uses as much as digits as its factorization.

56261016257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 151200, while the sum is 41.

The spelling of 56261016257 in words is "fifty-six billion, two hundred sixty-one million, sixteen thousand, two hundred fifty-seven".