550091089 has 2 divisors, whose sum is σ = 550091090. Its totient is φ = 550091088.

The previous prime is 550091039. The next prime is 550091167. The reversal of 550091089 is 980190055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 308599489 + 241491600 = 17567^2 + 15540^2 .

It is a cyclic number.

It is not a de Polignac number, because 550091089 - 2¹⁷ = 549960017 is a prime.

It is not a weakly prime, because it can be changed into another prime (550091039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275045544 + 275045545.

It is an arithmetic number, because the mean of its divisors is an integer number (275045545).

Almost surely, 2^550091089 is an apocalyptic number.

It is an amenable number.

550091089 is a deficient number, since it is larger than the sum of its proper divisors (1).

550091089 is an equidigital number, since it uses as much as digits as its factorization.

550091089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16200, while the sum is 37.

The square root of 550091089 is about 23454.0207427213. The cubic root of 550091089 is about 819.3664991070.

The spelling of 550091089 in words is "five hundred fifty million, ninety-one thousand, eighty-nine".