512943317 has 2 divisors, whose sum is σ = 512943318. Its totient is φ = 512943316.

The previous prime is 512943313. The next prime is 512943331. The reversal of 512943317 is 713349215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 409900516 + 103042801 = 20246^2 + 10151^2 .

It is a cyclic number.

It is not a de Polignac number, because 512943317 - 2² = 512943313 is a prime.

It is a super-2 number, since 2×512943317² = 526221692909924978, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (512943311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256471658 + 256471659.

It is an arithmetic number, because the mean of its divisors is an integer number (256471659).

Almost surely, 2^512943317 is an apocalyptic number.

It is an amenable number.

512943317 is a deficient number, since it is larger than the sum of its proper divisors (1).

512943317 is an equidigital number, since it uses as much as digits as its factorization.

512943317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 35.

The square root of 512943317 is about 22648.2519634518. The cubic root of 512943317 is about 800.4910095129.

The spelling of 512943317 in words is "five hundred twelve million, nine hundred forty-three thousand, three hundred seventeen".