252428389 has 2 divisors, whose sum is σ = 252428390. Its totient is φ = 252428388.

The previous prime is 252428353. The next prime is 252428401. The reversal of 252428389 is 983824252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 244672164 + 7756225 = 15642^2 + 2785^2 .

It is a cyclic number.

It is not a de Polignac number, because 252428389 - 2¹⁵ = 252395621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252428089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126214194 + 126214195.

It is an arithmetic number, because the mean of its divisors is an integer number (126214195).

Almost surely, 2^252428389 is an apocalyptic number.

It is an amenable number.

252428389 is a deficient number, since it is larger than the sum of its proper divisors (1).

252428389 is an equidigital number, since it uses as much as digits as its factorization.

252428389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 276480, while the sum is 43.

The square root of 252428389 is about 15887.9951221040. The cubic root of 252428389 is about 631.9936749955.

The spelling of 252428389 in words is "two hundred fifty-two million, four hundred twenty-eight thousand, three hundred eighty-nine".