252026909 has 4 divisors (see below), whose sum is σ = 252374304. Its totient is φ = 251679516.

The previous prime is 252026903. The next prime is 252026917. The reversal of 252026909 is 909620252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 252026909 - 2⁸ = 252026653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252026903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172607 + ... + 174060.

It is an arithmetic number, because the mean of its divisors is an integer number (63093576).

Almost surely, 2^252026909 is an apocalyptic number.

It is an amenable number.

252026909 is a deficient number, since it is larger than the sum of its proper divisors (347395).

252026909 is an equidigital number, since it uses as much as digits as its factorization.

252026909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347394.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 252026909 is about 15875.3553975966. The cubic root of 252026909 is about 631.6584413623.

The spelling of 252026909 in words is "two hundred fifty-two million, twenty-six thousand, nine hundred nine".