252571523 has 4 divisors (see below), whose sum is σ = 254031648. Its totient is φ = 251111400.

The previous prime is 252571519. The next prime is 252571547. The reversal of 252571523 is 325175252.

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

It is a cyclic number.

It is not a de Polignac number, because 252571523 - 2² = 252571519 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 252571523.

It is not an unprimeable number, because it can be changed into a prime (252471523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 729803 + ... + 730148.

It is an arithmetic number, because the mean of its divisors is an integer number (63507912).

Almost surely, 2^252571523 is an apocalyptic number.

252571523 is a deficient number, since it is larger than the sum of its proper divisors (1460125).

252571523 is a wasteful number, since it uses less digits than its factorization.

252571523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1460124.

The product of its digits is 21000, while the sum is 32.

The square root of 252571523 is about 15892.4989539090. The cubic root of 252571523 is about 632.1131051576.

The spelling of 252571523 in words is "two hundred fifty-two million, five hundred seventy-one thousand, five hundred twenty-three".