252689 has 4 divisors (see below), whose sum is σ = 256320. Its totient is φ = 249060.

The previous prime is 252667. The next prime is 252691. The reversal of 252689 is 986252.

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 252689 - 2¹² = 248593 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252289) 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, 1709 + ... + 1850.

It is an arithmetic number, because the mean of its divisors is an integer number (64080).

2²⁵²⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

252689 is a deficient number, since it is larger than the sum of its proper divisors (3631).

252689 is an equidigital number, since it uses as much as digits as its factorization.

252689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3630.

The product of its digits is 8640, while the sum is 32.

The square root of 252689 is about 502.6818079064. The cubic root of 252689 is about 63.2211093561.

The spelling of 252689 in words is "two hundred fifty-two thousand, six hundred eighty-nine".