511465217 has 2 divisors, whose sum is σ = 511465218. Its totient is φ = 511465216.

The previous prime is 511465193. The next prime is 511465219. The reversal of 511465217 is 712564115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 341658256 + 169806961 = 18484^2 + 13031^2 .

It is a cyclic number.

It is not a de Polignac number, because 511465217 - 2⁶ = 511465153 is a prime.

Together with 511465219, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (511465219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255732608 + 255732609.

It is an arithmetic number, because the mean of its divisors is an integer number (255732609).

Almost surely, 2^511465217 is an apocalyptic number.

It is an amenable number.

511465217 is a deficient number, since it is larger than the sum of its proper divisors (1).

511465217 is an equidigital number, since it uses as much as digits as its factorization.

511465217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8400, while the sum is 32.

The square root of 511465217 is about 22615.5967641802. The cubic root of 511465217 is about 799.7213701555.

The spelling of 511465217 in words is "five hundred eleven million, four hundred sixty-five thousand, two hundred seventeen".