54577788777557 has 2 divisors, whose sum is σ = 54577788777558. Its totient is φ = 54577788777556.

The previous prime is 54577788777469. The next prime is 54577788777563. The reversal of 54577788777557 is 75577788777545.

54577788777557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38422220456356 + 16155568321201 = 6198566^2 + 4019399^2 .

It is a cyclic number.

It is not a de Polignac number, because 54577788777557 - 2¹⁴ = 54577788761173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54577788779557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27288894388778 + 27288894388779.

It is an arithmetic number, because the mean of its divisors is an integer number (27288894388779).

Almost surely, 2^{54577788777557} is an apocalyptic number.

It is an amenable number.

54577788777557 is a deficient number, since it is larger than the sum of its proper divisors (1).

54577788777557 is an equidigital number, since it uses as much as digits as its factorization.

54577788777557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 131766880000, while the sum is 89.

The spelling of 54577788777557 in words is "fifty-four trillion, five hundred seventy-seven billion, seven hundred eighty-eight million, seven hundred seventy-seven thousand, five hundred fifty-seven".