512442817 has 2 divisors, whose sum is σ = 512442818. Its totient is φ = 512442816.

The previous prime is 512442809. The next prime is 512442839. The reversal of 512442817 is 718244215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 307265841 + 205176976 = 17529^2 + 14324^2 .

It is a cyclic number.

It is not a de Polignac number, because 512442817 - 2³ = 512442809 is a prime.

It is not a weakly prime, because it can be changed into another prime (512442857) 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, 256221408 + 256221409.

It is an arithmetic number, because the mean of its divisors is an integer number (256221409).

Almost surely, 2^512442817 is an apocalyptic number.

It is an amenable number.

512442817 is a deficient number, since it is larger than the sum of its proper divisors (1).

512442817 is an equidigital number, since it uses as much as digits as its factorization.

512442817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17920, while the sum is 34.

The square root of 512442817 is about 22637.1998489212. The cubic root of 512442817 is about 800.2305673961.

The spelling of 512442817 in words is "five hundred twelve million, four hundred forty-two thousand, eight hundred seventeen".