15500055089 has 2 divisors, whose sum is σ = 15500055090. Its totient is φ = 15500055088.

The previous prime is 15500055083. The next prime is 15500055113. The reversal of 15500055089 is 98055000551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15483571489 + 16483600 = 124433^2 + 4060^2 .

It is a cyclic number.

It is not a de Polignac number, because 15500055089 - 2⁴ = 15500055073 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (15500055083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7750027544 + 7750027545.

It is an arithmetic number, because the mean of its divisors is an integer number (7750027545).

Almost surely, 2^15500055089 is an apocalyptic number.

It is an amenable number.

15500055089 is a deficient number, since it is larger than the sum of its proper divisors (1).

15500055089 is an equidigital number, since it uses as much as digits as its factorization.

15500055089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45000, while the sum is 38.

The spelling of 15500055089 in words is "fifteen billion, five hundred million, fifty-five thousand, eighty-nine".