252989635 has 4 divisors (see below), whose sum is σ = 303587568. Its totient is φ = 202391704.

The previous prime is 252989621. The next prime is 252989641. The reversal of 252989635 is 536989252.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 252989635 - 2¹⁷ = 252858563 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25298959 + ... + 25298968.

It is an arithmetic number, because the mean of its divisors is an integer number (75896892).

Almost surely, 2^252989635 is an apocalyptic number.

252989635 is a deficient number, since it is larger than the sum of its proper divisors (50597933).

252989635 is an equidigital number, since it uses as much as digits as its factorization.

252989635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50597932.

The product of its digits is 1166400, while the sum is 49.

The square root of 252989635 is about 15905.6478962663. The cubic root of 252989635 is about 632.4617171286.

The spelling of 252989635 in words is "two hundred fifty-two million, nine hundred eighty-nine thousand, six hundred thirty-five".