56554656577 has 2 divisors, whose sum is σ = 56554656578. Its totient is φ = 56554656576.

The previous prime is 56554656539. The next prime is 56554656647. The reversal of 56554656577 is 77565645565.

56554656577 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46343756176 + 10210900401 = 215276^2 + 101049^2 .

It is a cyclic number.

It is not a de Polignac number, because 56554656577 - 2²⁷ = 56420438849 is a prime.

It is not a weakly prime, because it can be changed into another prime (56554656377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28277328288 + 28277328289.

It is an arithmetic number, because the mean of its divisors is an integer number (28277328289).

Almost surely, 2^56554656577 is an apocalyptic number.

It is an amenable number.

56554656577 is a deficient number, since it is larger than the sum of its proper divisors (1).

56554656577 is an equidigital number, since it uses as much as digits as its factorization.

56554656577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 132300000, while the sum is 61.

The spelling of 56554656577 in words is "fifty-six billion, five hundred fifty-four million, six hundred fifty-six thousand, five hundred seventy-seven".