518 is nontrivially palindromic in base 6.
518 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a magnanimous number.
It is a d-powerful number, because it can be written as 5 + 1 + 83 .
518 is a nontrivial repdigit in base 6.
It is a plaindrome in base 6 and base 15.
It is a nialpdrome in base 6 and base 11.
It is a zygodrome in base 6.
It is a congruent number.
It is an unprimeable number.
518 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
518 is a wasteful number, since it uses less digits than its factorization.
518 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 46.
The square root of 518 is about 22.7596133535. The cubic root of 518 is about 8.0311287183.