252489 has 4 divisors (see below), whose sum is σ = 336656. Its totient is φ = 168324.

The previous prime is 252481. The next prime is 252509. The reversal of 252489 is 984252.

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 not a de Polignac number, because 252489 - 2³ = 252481 is a prime.

It is a D-number.

It is a Duffinian number.

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (252481) 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, 42079 + ... + 42084.

It is an arithmetic number, because the mean of its divisors is an integer number (84164).

2²⁵²⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

252489 is a deficient number, since it is larger than the sum of its proper divisors (84167).

252489 is an equidigital number, since it uses as much as digits as its factorization.

252489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84166.

The product of its digits is 5760, while the sum is 30.

The square root of 252489 is about 502.4828355277. The cubic root of 252489 is about 63.2044253965.

It can be divided in two parts, 252 and 489, that added together give a triangular number (741 = T₃₈).

The spelling of 252489 in words is "two hundred fifty-two thousand, four hundred eighty-nine".