55877122517 has 2 divisors, whose sum is σ = 55877122518. Its totient is φ = 55877122516.

The previous prime is 55877122471. The next prime is 55877122531. The reversal of 55877122517 is 71522177855.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51968497156 + 3908625361 = 227966^2 + 62519^2 .

It is a cyclic number.

It is not a de Polignac number, because 55877122517 - 2⁶ = 55877122453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55877122547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27938561258 + 27938561259.

It is an arithmetic number, because the mean of its divisors is an integer number (27938561259).

Almost surely, 2^55877122517 is an apocalyptic number.

It is an amenable number.

55877122517 is a deficient number, since it is larger than the sum of its proper divisors (1).

55877122517 is an equidigital number, since it uses as much as digits as its factorization.

55877122517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1372000, while the sum is 50.

The spelling of 55877122517 in words is "fifty-five billion, eight hundred seventy-seven million, one hundred twenty-two thousand, five hundred seventeen".