512748317 has 12 divisors (see below), whose sum is σ = 523766880. Its totient is φ = 501910992.

The previous prime is 512748263. The next prime is 512748323. The reversal of 512748317 is 713847215.

It is a de Polignac number, because none of the positive numbers 2^k-512748317 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512748347) 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 in 11 ways as a sum of consecutive naturals, for example, 1223534 + ... + 1223952.

It is an arithmetic number, because the mean of its divisors is an integer number (43647240).

Almost surely, 2^512748317 is an apocalyptic number.

It is an amenable number.

512748317 is a deficient number, since it is larger than the sum of its proper divisors (11018563).

512748317 is a wasteful number, since it uses less digits than its factorization.

512748317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740 (or 631 counting only the distinct ones).

The product of its digits is 47040, while the sum is 38.

The square root of 512748317 is about 22643.9465862292. The cubic root of 512748317 is about 800.3895587117.

The spelling of 512748317 in words is "five hundred twelve million, seven hundred forty-eight thousand, three hundred seventeen".