511330217 has 2 divisors, whose sum is σ = 511330218. Its totient is φ = 511330216.

The previous prime is 511330201. The next prime is 511330231. The reversal of 511330217 is 712033115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 327754816 + 183575401 = 18104^2 + 13549^2 .

It is a cyclic number.

It is not a de Polignac number, because 511330217 - 2⁴ = 511330201 is a prime.

It is a super-2 number, since 2×511330217² = 522917181634534178, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 511330192 and 511330201.

It is not a weakly prime, because it can be changed into another prime (511330247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255665108 + 255665109.

It is an arithmetic number, because the mean of its divisors is an integer number (255665109).

Almost surely, 2^511330217 is an apocalyptic number.

It is an amenable number.

511330217 is a deficient number, since it is larger than the sum of its proper divisors (1).

511330217 is an equidigital number, since it uses as much as digits as its factorization.

511330217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 511330217 is about 22612.6119013262. The cubic root of 511330217 is about 799.6510024605.

The spelling of 511330217 in words is "five hundred eleven million, three hundred thirty thousand, two hundred seventeen".