252626389 has 4 divisors (see below), whose sum is σ = 252689580. Its totient is φ = 252563200.

The previous prime is 252626383. The next prime is 252626393. The reversal of 252626389 is 983626252.

It is a happy number.

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 124144164 + 128482225 = 11142^2 + 11335^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252626389 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 (252626383) 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, 25162 + ... + 33739.

It is an arithmetic number, because the mean of its divisors is an integer number (63172395).

Almost surely, 2^252626389 is an apocalyptic number.

It is an amenable number.

252626389 is a deficient number, since it is larger than the sum of its proper divisors (63191).

252626389 is an equidigital number, since it uses as much as digits as its factorization.

252626389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63190.

The product of its digits is 311040, while the sum is 43.

The square root of 252626389 is about 15894.2250204280. The cubic root of 252626389 is about 632.1588730603.

The spelling of 252626389 in words is "two hundred fifty-two million, six hundred twenty-six thousand, three hundred eighty-nine".