252227813 has 2 divisors, whose sum is σ = 252227814. Its totient is φ = 252227812.

The previous prime is 252227791. The next prime is 252227837. The reversal of 252227813 is 318722252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 157301764 + 94926049 = 12542^2 + 9743^2 .

It is a cyclic number.

It is not a de Polignac number, because 252227813 - 2¹⁰ = 252226789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 252227813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252227893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126113906 + 126113907.

It is an arithmetic number, because the mean of its divisors is an integer number (126113907).

Almost surely, 2^252227813 is an apocalyptic number.

It is an amenable number.

252227813 is a deficient number, since it is larger than the sum of its proper divisors (1).

252227813 is an equidigital number, since it uses as much as digits as its factorization.

252227813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 32.

The square root of 252227813 is about 15881.6816804770. The cubic root of 252227813 is about 631.8262395849.

The spelling of 252227813 in words is "two hundred fifty-two million, two hundred twenty-seven thousand, eight hundred thirteen".