55305585328529 has 2 divisors, whose sum is σ = 55305585328530. Its totient is φ = 55305585328528.

The previous prime is 55305585328501. The next prime is 55305585328579. The reversal of 55305585328529 is 92582358550355.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54583726086400 + 721859242129 = 7388080^2 + 849623^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55305585328529 is a prime.

It is a super-2 number, since 2×55305585328529² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55305585328579) 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, 27652792664264 + 27652792664265.

It is an arithmetic number, because the mean of its divisors is an integer number (27652792664265).

Almost surely, 2^{55305585328529} is an apocalyptic number.

It is an amenable number.

55305585328529 is a deficient number, since it is larger than the sum of its proper divisors (1).

55305585328529 is an equidigital number, since it uses as much as digits as its factorization.

55305585328529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324000000, while the sum is 65.

The spelling of 55305585328529 in words is "fifty-five trillion, three hundred five billion, five hundred eighty-five million, three hundred twenty-eight thousand, five hundred twenty-nine".