550116989 has 2 divisors, whose sum is σ = 550116990. Its totient is φ = 550116988.

The previous prime is 550116943. The next prime is 550117019. The reversal of 550116989 is 989611055.

550116989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 549199225 + 917764 = 23435^2 + 958^2 .

It is a cyclic number.

It is not a de Polignac number, because 550116989 - 2²⁰ = 549068413 is a prime.

It is a super-2 number, since 2×550116989² = 605257403172852242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550116929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275058494 + 275058495.

It is an arithmetic number, because the mean of its divisors is an integer number (275058495).

Almost surely, 2^550116989 is an apocalyptic number.

It is an amenable number.

550116989 is a deficient number, since it is larger than the sum of its proper divisors (1).

550116989 is an equidigital number, since it uses as much as digits as its factorization.

550116989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 44.

The square root of 550116989 is about 23454.5728803575. The cubic root of 550116989 is about 819.3793583466.

The spelling of 550116989 in words is "five hundred fifty million, one hundred sixteen thousand, nine hundred eighty-nine".