252524491 has 4 divisors (see below), whose sum is σ = 252624472. Its totient is φ = 252424512.

The previous prime is 252524479. The next prime is 252524533. The reversal of 252524491 is 194425252.

It is a happy number.

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 252524491 - 2²¹ = 250427339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252521491) 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, 46101 + ... + 51286.

It is an arithmetic number, because the mean of its divisors is an integer number (63156118).

Almost surely, 2^252524491 is an apocalyptic number.

252524491 is a deficient number, since it is larger than the sum of its proper divisors (99981).

252524491 is an equidigital number, since it uses as much as digits as its factorization.

252524491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99980.

The product of its digits is 28800, while the sum is 34.

The square root of 252524491 is about 15891.0191932425. The cubic root of 252524491 is about 632.0738669137.

The spelling of 252524491 in words is "two hundred fifty-two million, five hundred twenty-four thousand, four hundred ninety-one".