252641189 has 2 divisors, whose sum is σ = 252641190. Its totient is φ = 252641188.

The previous prime is 252641173. The next prime is 252641197. The reversal of 252641189 is 981146252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 203290564 + 49350625 = 14258^2 + 7025^2 .

It is a cyclic number.

It is not a de Polignac number, because 252641189 - 2⁴ = 252641173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252647189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126320594 + 126320595.

It is an arithmetic number, because the mean of its divisors is an integer number (126320595).

Almost surely, 2^252641189 is an apocalyptic number.

It is an amenable number.

252641189 is a deficient number, since it is larger than the sum of its proper divisors (1).

252641189 is an equidigital number, since it uses as much as digits as its factorization.

252641189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 38.

The square root of 252641189 is about 15894.6905915151. The cubic root of 252641189 is about 632.1712177308.

The spelling of 252641189 in words is "two hundred fifty-two million, six hundred forty-one thousand, one hundred eighty-nine".