550040189 has 2 divisors, whose sum is σ = 550040190. Its totient is φ = 550040188.

The previous prime is 550040167. The next prime is 550040191. The reversal of 550040189 is 981040055.

550040189 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., 547092100 + 2948089 = 23390^2 + 1717^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-550040189 is a prime.

Together with 550040191, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550040089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275020094 + 275020095.

It is an arithmetic number, because the mean of its divisors is an integer number (275020095).

Almost surely, 2^550040189 is an apocalyptic number.

It is an amenable number.

550040189 is a deficient number, since it is larger than the sum of its proper divisors (1).

550040189 is an equidigital number, since it uses as much as digits as its factorization.

550040189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 550040189 is about 23452.9356158243. The cubic root of 550040189 is about 819.3412262980.

The spelling of 550040189 in words is "five hundred fifty million, forty thousand, one hundred eighty-nine".