252566523 has 12 divisors (see below), whose sum is σ = 397983768. Its totient is φ = 153070560.

The previous prime is 252566513. The next prime is 252566537. The reversal of 252566523 is 325665252.

It is not a de Polignac number, because 252566523 - 2⁶ = 252566459 is a prime.

It is a super-3 number, since 3×252566523³ (a number of 26 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (252566513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1275490 + ... + 1275687.

It is an arithmetic number, because the mean of its divisors is an integer number (33165314).

Almost surely, 2^252566523 is an apocalyptic number.

252566523 is a deficient number, since it is larger than the sum of its proper divisors (145417245).

252566523 is a wasteful number, since it uses less digits than its factorization.

252566523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2551194 (or 2551191 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

The square root of 252566523 is about 15892.3416462144. The cubic root of 252566523 is about 632.1089339479.

It can be divided in two parts, 2 and 52566523, that added together give a palindrome (52566525).

The spelling of 252566523 in words is "two hundred fifty-two million, five hundred sixty-six thousand, five hundred twenty-three".