252438449 has 2 divisors, whose sum is σ = 252438450. Its totient is φ = 252438448.

The previous prime is 252438413. The next prime is 252438467. The reversal of 252438449 is 944834252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 241336225 + 11102224 = 15535^2 + 3332^2 .

It is a cyclic number.

It is not a de Polignac number, because 252438449 - 2¹² = 252434353 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (252438469) 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, 126219224 + 126219225.

It is an arithmetic number, because the mean of its divisors is an integer number (126219225).

Almost surely, 2^252438449 is an apocalyptic number.

It is an amenable number.

252438449 is a deficient number, since it is larger than the sum of its proper divisors (1).

252438449 is an equidigital number, since it uses as much as digits as its factorization.

252438449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 276480, while the sum is 41.

The square root of 252438449 is about 15888.3117101849. The cubic root of 252438449 is about 632.0020704747.

The spelling of 252438449 in words is "two hundred fifty-two million, four hundred thirty-eight thousand, four hundred forty-nine".