252530 has 8 divisors (see below), whose sum is σ = 454572. Its totient is φ = 101008.

The previous prime is 252509. The next prime is 252533. The reversal of 252530 is 35252.

It can be written as a sum of positive squares in 2 ways, for example, as 241081 + 11449 = 491^2 + 107^2 .

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 252499 and 252508.

It is not an unprimeable number, because it can be changed into a prime (252533) by changing a digit.

252530 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 3 ways as a sum of consecutive naturals, for example, 12617 + ... + 12636.

2²⁵²⁵³⁰ is an apocalyptic number.

252530 is a deficient number, since it is larger than the sum of its proper divisors (202042).

252530 is a wasteful number, since it uses less digits than its factorization.

252530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25260.

The product of its (nonzero) digits is 300, while the sum is 17.

The square root of 252530 is about 502.5236312851. The cubic root of 252530 is about 63.2078463259.

Adding to 252530 its reverse (35252), we get a palindrome (287782).

The spelling of 252530 in words is "two hundred fifty-two thousand, five hundred thirty".