252530521 has 16 divisors (see below), whose sum is σ = 269458560. Its totient is φ = 236234880.

The previous prime is 252530519. The next prime is 252530527. The reversal of 252530521 is 125035252.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 252530521 - 2¹ = 252530519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (252530527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193156 + ... + 194458.

It is an arithmetic number, because the mean of its divisors is an integer number (16841160).

Almost surely, 2^252530521 is an apocalyptic number.

It is an amenable number.

252530521 is a deficient number, since it is larger than the sum of its proper divisors (16928039).

252530521 is a wasteful number, since it uses less digits than its factorization.

252530521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1536.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 252530521 is about 15891.2089219165. The cubic root of 252530521 is about 632.0788979440.

Adding to 252530521 its reverse (125035252), we get a palindrome (377565773).

The spelling of 252530521 in words is "two hundred fifty-two million, five hundred thirty thousand, five hundred twenty-one".