513927317 has 2 divisors, whose sum is σ = 513927318. Its totient is φ = 513927316.

The previous prime is 513927301. The next prime is 513927343. The reversal of 513927317 is 713729315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 427083556 + 86843761 = 20666^2 + 9319^2 .

It is a cyclic number.

It is not a de Polignac number, because 513927317 - 2⁴ = 513927301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513927367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256963658 + 256963659.

It is an arithmetic number, because the mean of its divisors is an integer number (256963659).

Almost surely, 2^513927317 is an apocalyptic number.

It is an amenable number.

513927317 is a deficient number, since it is larger than the sum of its proper divisors (1).

513927317 is an equidigital number, since it uses as much as digits as its factorization.

513927317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 39690, while the sum is 38.

The square root of 513927317 is about 22669.9650859899. The cubic root of 513927317 is about 801.0025540195.

The spelling of 513927317 in words is "five hundred thirteen million, nine hundred twenty-seven thousand, three hundred seventeen".