550285889 has 2 divisors, whose sum is σ = 550285890. Its totient is φ = 550285888.

The previous prime is 550285877. The next prime is 550285891. The reversal of 550285889 is 988582055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 475981489 + 74304400 = 21817^2 + 8620^2 .

It is a cyclic number.

It is not a de Polignac number, because 550285889 - 2⁴ = 550285873 is a prime.

Together with 550285891, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (550285289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275142944 + 275142945.

It is an arithmetic number, because the mean of its divisors is an integer number (275142945).

Almost surely, 2^550285889 is an apocalyptic number.

It is an amenable number.

550285889 is a deficient number, since it is larger than the sum of its proper divisors (1).

550285889 is an equidigital number, since it uses as much as digits as its factorization.

550285889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152000, while the sum is 50.

The square root of 550285889 is about 23458.1731812177. The cubic root of 550285889 is about 819.4632065797.

The spelling of 550285889 in words is "five hundred fifty million, two hundred eighty-five thousand, eight hundred eighty-nine".