252635 has 4 divisors (see below), whose sum is σ = 303168. Its totient is φ = 202104.

The previous prime is 252617. The next prime is 252641. The reversal of 252635 is 536252.

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 252635 - 2¹⁰ = 251611 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 252635.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25259 + ... + 25268.

It is an arithmetic number, because the mean of its divisors is an integer number (75792).

2²⁵²⁶³⁵ is an apocalyptic number.

252635 is a deficient number, since it is larger than the sum of its proper divisors (50533).

252635 is an equidigital number, since it uses as much as digits as its factorization.

252635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50532.

The product of its digits is 1800, while the sum is 23.

The square root of 252635 is about 502.6280931265. The cubic root of 252635 is about 63.2166055549.

Adding to 252635 its reverse (536252), we get a palindrome (788887).

It can be divided in two parts, 2526 and 35, that multiplied together give a triangular number (88410 = T₄₂₀).

The spelling of 252635 in words is "two hundred fifty-two thousand, six hundred thirty-five".