5531550989 has 2 divisors, whose sum is σ = 5531550990. Its totient is φ = 5531550988.

The previous prime is 5531550979. The next prime is 5531551033. The reversal of 5531550989 is 9890551355.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5526732964 + 4818025 = 74342^2 + 2195^2 .

It is a cyclic number.

It is not a de Polignac number, because 5531550989 - 2⁸ = 5531550733 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5531550929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2765775494 + 2765775495.

It is an arithmetic number, because the mean of its divisors is an integer number (2765775495).

Almost surely, 2^5531550989 is an apocalyptic number.

It is an amenable number.

5531550989 is a deficient number, since it is larger than the sum of its proper divisors (1).

5531550989 is an equidigital number, since it uses as much as digits as its factorization.

5531550989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1215000, while the sum is 50.

The square root of 5531550989 is about 74374.3974026008. The cubic root of 5531550989 is about 1768.5430666790.

The spelling of 5531550989 in words is "five billion, five hundred thirty-one million, five hundred fifty thousand, nine hundred eighty-nine".