551500189 has 2 divisors, whose sum is σ = 551500190. Its totient is φ = 551500188.

The previous prime is 551500177. The next prime is 551500237. The reversal of 551500189 is 981005155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 435765625 + 115734564 = 20875^2 + 10758^2 .

It is a cyclic number.

It is not a de Polignac number, because 551500189 - 2⁹ = 551499677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551500109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275750094 + 275750095.

It is an arithmetic number, because the mean of its divisors is an integer number (275750095).

Almost surely, 2^551500189 is an apocalyptic number.

It is an amenable number.

551500189 is a deficient number, since it is larger than the sum of its proper divisors (1).

551500189 is an equidigital number, since it uses as much as digits as its factorization.

551500189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9000, while the sum is 34.

The square root of 551500189 is about 23484.0411556444. The cubic root of 551500189 is about 820.0655256977.

The spelling of 551500189 in words is "five hundred fifty-one million, five hundred thousand, one hundred eighty-nine".