55542649177 has 2 divisors, whose sum is σ = 55542649178. Its totient is φ = 55542649176.

The previous prime is 55542649159. The next prime is 55542649223. The reversal of 55542649177 is 77194624555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31278044736 + 24264604441 = 176856^2 + 155771^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55542649177 is a prime.

It is not a weakly prime, because it can be changed into another prime (55542619177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27771324588 + 27771324589.

It is an arithmetic number, because the mean of its divisors is an integer number (27771324589).

Almost surely, 2^55542649177 is an apocalyptic number.

It is an amenable number.

55542649177 is a deficient number, since it is larger than the sum of its proper divisors (1).

55542649177 is an equidigital number, since it uses as much as digits as its factorization.

55542649177 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10584000, while the sum is 55.

The spelling of 55542649177 in words is "fifty-five billion, five hundred forty-two million, six hundred forty-nine thousand, one hundred seventy-seven".