55560889169 has 2 divisors, whose sum is σ = 55560889170. Its totient is φ = 55560889168.

The previous prime is 55560889147. The next prime is 55560889177. The reversal of 55560889169 is 96198806555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48879461569 + 6681427600 = 221087^2 + 81740^2 .

It is a cyclic number.

It is not a de Polignac number, because 55560889169 - 2³² = 51265921873 is a prime.

It is a super-2 number, since 2×55560889169² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55560889129) 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, 27780444584 + 27780444585.

It is an arithmetic number, because the mean of its divisors is an integer number (27780444585).

Almost surely, 2^55560889169 is an apocalyptic number.

It is an amenable number.

55560889169 is a deficient number, since it is larger than the sum of its proper divisors (1).

55560889169 is an equidigital number, since it uses as much as digits as its factorization.

55560889169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328000, while the sum is 62.

The spelling of 55560889169 in words is "fifty-five billion, five hundred sixty million, eight hundred eighty-nine thousand, one hundred sixty-nine".