56977240321 has 2 divisors, whose sum is σ = 56977240322. Its totient is φ = 56977240320.

The previous prime is 56977240301. The next prime is 56977240339. The reversal of 56977240321 is 12304277965.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43691450625 + 13285789696 = 209025^2 + 115264^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56977240321 is a prime.

It is not a weakly prime, because it can be changed into another prime (56977240301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28488620160 + 28488620161.

It is an arithmetic number, because the mean of its divisors is an integer number (28488620161).

Almost surely, 2^56977240321 is an apocalyptic number.

It is an amenable number.

56977240321 is a deficient number, since it is larger than the sum of its proper divisors (1).

56977240321 is an equidigital number, since it uses as much as digits as its factorization.

56977240321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 635040, while the sum is 46.

The spelling of 56977240321 in words is "fifty-six billion, nine hundred seventy-seven million, two hundred forty thousand, three hundred twenty-one".