517081 has 2 divisors, whose sum is σ = 517082. Its totient is φ = 517080.

The previous prime is 517079. The next prime is 517087. The reversal of 517081 is 180715.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 502681 + 14400 = 709^2 + 120^2 .

It is a cyclic number.

It is not a de Polignac number, because 517081 - 2¹ = 517079 is a prime.

It is a super-2 number, since 2×517081² = 534745521122, which contains 22 as substring.

Together with 517079, it forms a pair of twin primes.

It is a nialpdrome in base 15.

It is not a weakly prime, because it can be changed into another prime (517087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258540 + 258541.

It is an arithmetic number, because the mean of its divisors is an integer number (258541).

2⁵¹⁷⁰⁸¹ is an apocalyptic number.

It is an amenable number.

517081 is a deficient number, since it is larger than the sum of its proper divisors (1).

517081 is an equidigital number, since it uses as much as digits as its factorization.

517081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 22.

The square root of 517081 is about 719.0834443929. The cubic root of 517081 is about 80.2637648125.

Adding to 517081 its reverse (180715), we get a palindrome (697796).

The spelling of 517081 in words is "five hundred seventeen thousand, eighty-one".