512224217 has 2 divisors, whose sum is σ = 512224218. Its totient is φ = 512224216.

The previous prime is 512224061. The next prime is 512224241. The reversal of 512224217 is 712422215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 459502096 + 52722121 = 21436^2 + 7261^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-512224217 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (512224247) 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, 256112108 + 256112109.

It is an arithmetic number, because the mean of its divisors is an integer number (256112109).

Almost surely, 2^512224217 is an apocalyptic number.

It is an amenable number.

512224217 is a deficient number, since it is larger than the sum of its proper divisors (1).

512224217 is an equidigital number, since it uses as much as digits as its factorization.

512224217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2240, while the sum is 26.

The square root of 512224217 is about 22632.3709981964. The cubic root of 512224217 is about 800.1167626448.

The spelling of 512224217 in words is "five hundred twelve million, two hundred twenty-four thousand, two hundred seventeen".