517897271 has 2 divisors, whose sum is σ = 517897272. Its totient is φ = 517897270.

The previous prime is 517897249. The next prime is 517897273. The reversal of 517897271 is 172798715.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-517897271 is a prime.

Together with 517897273, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (517897273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258948635 + 258948636.

It is an arithmetic number, because the mean of its divisors is an integer number (258948636).

Almost surely, 2^517897271 is an apocalyptic number.

517897271 is a deficient number, since it is larger than the sum of its proper divisors (1).

517897271 is an equidigital number, since it uses as much as digits as its factorization.

517897271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 246960, while the sum is 47.

The square root of 517897271 is about 22757.3564150145. The cubic root of 517897271 is about 803.0597775939.

The spelling of 517897271 in words is "five hundred seventeen million, eight hundred ninety-seven thousand, two hundred seventy-one".