512216797 has 2 divisors, whose sum is σ = 512216798. Its totient is φ = 512216796.

The previous prime is 512216743. The next prime is 512216867. The reversal of 512216797 is 797612215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 261501241 + 250715556 = 16171^2 + 15834^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-512216797 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (512216737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256108398 + 256108399.

It is an arithmetic number, because the mean of its divisors is an integer number (256108399).

Almost surely, 2^512216797 is an apocalyptic number.

It is an amenable number.

512216797 is a deficient number, since it is larger than the sum of its proper divisors (1).

512216797 is an equidigital number, since it uses as much as digits as its factorization.

512216797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52920, while the sum is 40.

The square root of 512216797 is about 22632.2070731071. The cubic root of 512216797 is about 800.1128991706.

The spelling of 512216797 in words is "five hundred twelve million, two hundred sixteen thousand, seven hundred ninety-seven".