252126817 has 2 divisors, whose sum is σ = 252126818. Its totient is φ = 252126816.

The previous prime is 252126803. The next prime is 252126863. The reversal of 252126817 is 718621252.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 250778896 + 1347921 = 15836^2 + 1161^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252126817 is a prime.

It is not a weakly prime, because it can be changed into another prime (252126517) 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, 126063408 + 126063409.

It is an arithmetic number, because the mean of its divisors is an integer number (126063409).

Almost surely, 2^252126817 is an apocalyptic number.

It is an amenable number.

252126817 is a deficient number, since it is larger than the sum of its proper divisors (1).

252126817 is an equidigital number, since it uses as much as digits as its factorization.

252126817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 34.

The square root of 252126817 is about 15878.5017240293. The cubic root of 252126817 is about 631.7418972581.

The spelling of 252126817 in words is "two hundred fifty-two million, one hundred twenty-six thousand, eight hundred seventeen".