56554205077 has 2 divisors, whose sum is σ = 56554205078. Its totient is φ = 56554205076.

The previous prime is 56554205041. The next prime is 56554205093. The reversal of 56554205077 is 77050245565.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51091369156 + 5462835921 = 226034^2 + 73911^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56554205077 is a prime.

It is a super-2 number, since 2×56554205077² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56554205977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28277102538 + 28277102539.

It is an arithmetic number, because the mean of its divisors is an integer number (28277102539).

Almost surely, 2^56554205077 is an apocalyptic number.

It is an amenable number.

56554205077 is a deficient number, since it is larger than the sum of its proper divisors (1).

56554205077 is an equidigital number, since it uses as much as digits as its factorization.

56554205077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1470000, while the sum is 46.

The spelling of 56554205077 in words is "fifty-six billion, five hundred fifty-four million, two hundred five thousand, seventy-seven".