56613053261 has 2 divisors, whose sum is σ = 56613053262. Its totient is φ = 56613053260.

The previous prime is 56613053197. The next prime is 56613053269. The reversal of 56613053261 is 16235031665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51080520100 + 5532533161 = 226010^2 + 74381^2 .

It is a cyclic number.

It is not a de Polignac number, because 56613053261 - 2⁶ = 56613053197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56613053269) 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, 28306526630 + 28306526631.

It is an arithmetic number, because the mean of its divisors is an integer number (28306526631).

Almost surely, 2^56613053261 is an apocalyptic number.

It is an amenable number.

56613053261 is a deficient number, since it is larger than the sum of its proper divisors (1).

56613053261 is an equidigital number, since it uses as much as digits as its factorization.

56613053261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 38.

The spelling of 56613053261 in words is "fifty-six billion, six hundred thirteen million, fifty-three thousand, two hundred sixty-one".