56554485677 has 2 divisors, whose sum is σ = 56554485678. Its totient is φ = 56554485676.

The previous prime is 56554485653. The next prime is 56554485683. The reversal of 56554485677 is 77658445565.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52326105001 + 4228380676 = 228749^2 + 65026^2 .

It is a cyclic number.

It is not a de Polignac number, because 56554485677 - 2¹⁸ = 56554223533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56554485277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28277242838 + 28277242839.

It is an arithmetic number, because the mean of its divisors is an integer number (28277242839).

Almost surely, 2^56554485677 is an apocalyptic number.

It is an amenable number.

56554485677 is a deficient number, since it is larger than the sum of its proper divisors (1).

56554485677 is an equidigital number, since it uses as much as digits as its factorization.

56554485677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120000, while the sum is 62.

The spelling of 56554485677 in words is "fifty-six billion, five hundred fifty-four million, four hundred eighty-five thousand, six hundred seventy-seven".