252943849 has 6 divisors (see below), whose sum is σ = 261367530. Its totient is φ = 244783440.

The previous prime is 252943843. The next prime is 252943853. The reversal of 252943849 is 948349252.

It can be written as a sum of positive squares in only one way, i.e., 181845225 + 71098624 = 13485^2 + 8432^2 .

It is not a de Polignac number, because 252943849 - 2³ = 252943841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 252943799 and 252943808.

It is not an unprimeable number, because it can be changed into a prime (252943841) 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 in 5 ways as a sum of consecutive naturals, for example, 130644 + ... + 132565.

It is an arithmetic number, because the mean of its divisors is an integer number (43561255).

Almost surely, 2^252943849 is an apocalyptic number.

It is an amenable number.

252943849 is a deficient number, since it is larger than the sum of its proper divisors (8423681).

252943849 is an equidigital number, since it uses as much as digits as its factorization.

252943849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263271 (or 263240 counting only the distinct ones).

The product of its digits is 622080, while the sum is 46.

The square root of 252943849 is about 15904.2085310776. The cubic root of 252943849 is about 632.4235605729.

The spelling of 252943849 in words is "two hundred fifty-two million, nine hundred forty-three thousand, eight hundred forty-nine".