252666523 has 8 divisors (see below), whose sum is σ = 272157696. Its totient is φ = 233884200.

The previous prime is 252666521. The next prime is 252666539. The reversal of 252666523 is 325666252.

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

It is a cyclic number.

It is not a de Polignac number, because 252666523 - 2¹ = 252666521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252666521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176473 + ... + 177898.

It is an arithmetic number, because the mean of its divisors is an integer number (34019712).

Almost surely, 2^252666523 is an apocalyptic number.

252666523 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

252666523 is a deficient number, since it is larger than the sum of its proper divisors (19491173).

252666523 is a wasteful number, since it uses less digits than its factorization.

252666523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354425.

The product of its digits is 129600, while the sum is 37.

The square root of 252666523 is about 15895.4875043202. The cubic root of 252666523 is about 632.1923476851.

The spelling of 252666523 in words is "two hundred fifty-two million, six hundred sixty-six thousand, five hundred twenty-three".