252612517 has 4 divisors (see below), whose sum is σ = 254848140. Its totient is φ = 250376896.

The previous prime is 252612511. The next prime is 252612539. The reversal of 252612517 is 715216252.

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

It can be written as a sum of positive squares in 2 ways, for example, as 139381636 + 113230881 = 11806^2 + 10641^2 .

It is a cyclic number.

It is not a de Polignac number, because 252612517 - 2¹¹ = 252610469 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252612511) 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, 1117642 + ... + 1117867.

It is an arithmetic number, because the mean of its divisors is an integer number (63712035).

Almost surely, 2^252612517 is an apocalyptic number.

It is an amenable number.

252612517 is a deficient number, since it is larger than the sum of its proper divisors (2235623).

252612517 is a wasteful number, since it uses less digits than its factorization.

252612517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2235622.

The product of its digits is 8400, while the sum is 31.

The square root of 252612517 is about 15893.7886295244. The cubic root of 252612517 is about 632.1473019962.

Adding to 252612517 its reverse (715216252), we get a palindrome (967828769).

The spelling of 252612517 in words is "two hundred fifty-two million, six hundred twelve thousand, five hundred seventeen".