252241813 has 4 divisors (see below), whose sum is σ = 252582048. Its totient is φ = 251901580.

The previous prime is 252241757. The next prime is 252241831. The reversal of 252241813 is 318142252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 252241813 - 2¹⁷ = 252110741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252241313) 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, 169003 + ... + 170488.

It is an arithmetic number, because the mean of its divisors is an integer number (63145512).

Almost surely, 2^252241813 is an apocalyptic number.

It is an amenable number.

252241813 is a deficient number, since it is larger than the sum of its proper divisors (340235).

252241813 is an equidigital number, since it uses as much as digits as its factorization.

252241813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340234.

The product of its digits is 3840, while the sum is 28.

The square root of 252241813 is about 15882.1224337303. The cubic root of 252241813 is about 631.8379292867.

The spelling of 252241813 in words is "two hundred fifty-two million, two hundred forty-one thousand, eight hundred thirteen".