252690233 has 4 divisors (see below), whose sum is σ = 252735348. Its totient is φ = 252645120.

The previous prime is 252690211. The next prime is 252690239. The reversal of 252690233 is 332096252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 71707024 + 180983209 = 8468^2 + 13453^2 .

It is a cyclic number.

It is not a de Polignac number, because 252690233 - 2⁶ = 252690169 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 252690233.

It is not an unprimeable number, because it can be changed into a prime (252690239) 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 in 3 ways as a sum of consecutive naturals, for example, 12728 + ... + 25833.

It is an arithmetic number, because the mean of its divisors is an integer number (63183837).

Almost surely, 2^252690233 is an apocalyptic number.

It is an amenable number.

252690233 is a deficient number, since it is larger than the sum of its proper divisors (45115).

252690233 is an equidigital number, since it uses as much as digits as its factorization.

252690233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45114.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 252690233 is about 15896.2332959730. The cubic root of 252690233 is about 632.2121218543.

The spelling of 252690233 in words is "two hundred fifty-two million, six hundred ninety thousand, two hundred thirty-three".