252531649 has 2 divisors, whose sum is σ = 252531650. Its totient is φ = 252531648.

The previous prime is 252531619. The next prime is 252531659. The reversal of 252531649 is 946135252.

252531649 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., 151167025 + 101364624 = 12295^2 + 10068^2 .

It is a cyclic number.

It is not a de Polignac number, because 252531649 - 2⁹ = 252531137 is a prime.

It is not a weakly prime, because it can be changed into another prime (252531619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126265824 + 126265825.

It is an arithmetic number, because the mean of its divisors is an integer number (126265825).

Almost surely, 2^252531649 is an apocalyptic number.

It is an amenable number.

252531649 is a deficient number, since it is larger than the sum of its proper divisors (1).

252531649 is an equidigital number, since it uses as much as digits as its factorization.

252531649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 37.

The square root of 252531649 is about 15891.2444131981. The cubic root of 252531649 is about 632.0798390631.

The spelling of 252531649 in words is "two hundred fifty-two million, five hundred thirty-one thousand, six hundred forty-nine".