252439 has 8 divisors (see below), whose sum is σ = 281232. Its totient is φ = 224640.

The previous prime is 252431. The next prime is 252443. The reversal of 252439 is 934252.

It is a happy number.

252439 is nontrivially palindromic in base 15.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 252439 - 2³ = 252431 is a prime.

It is a d-powerful number, because it can be written as 2⁷ + 5⁵ + 4² + 2¹⁷ + 3¹⁰ + 9⁵ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 367 + ... + 799.

It is an arithmetic number, because the mean of its divisors is an integer number (35154).

2²⁵²⁴³⁹ is an apocalyptic number.

252439 is a deficient number, since it is larger than the sum of its proper divisors (28793).

252439 is a wasteful number, since it uses less digits than its factorization.

252439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497.

The product of its digits is 2160, while the sum is 25.

The square root of 252439 is about 502.4330801211. The cubic root of 252439 is about 63.2002530300.

It can be divided in two parts, 25243 and 9, that added together give a palindrome (25252).

The spelling of 252439 in words is "two hundred fifty-two thousand, four hundred thirty-nine".