252543 has 4 divisors (see below), whose sum is σ = 336728. Its totient is φ = 168360.

The previous prime is 252541. The next prime is 252559. The reversal of 252543 is 345252.

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

It is not a de Polignac number, because 252543 - 2¹ = 252541 is a prime.

It is a D-number.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252541) 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, 42088 + ... + 42093.

It is an arithmetic number, because the mean of its divisors is an integer number (84182).

2²⁵²⁵⁴³ is an apocalyptic number.

252543 is a deficient number, since it is larger than the sum of its proper divisors (84185).

252543 is an equidigital number, since it uses as much as digits as its factorization.

252543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84184.

The product of its digits is 1200, while the sum is 21.

The square root of 252543 is about 502.5365658338. The cubic root of 252543 is about 63.2089309336.

Adding to 252543 its reverse (345252), we get a palindrome (597795).

The spelling of 252543 in words is "two hundred fifty-two thousand, five hundred forty-three".