518081 has 8 divisors (see below), whose sum is σ = 539904. Its totient is φ = 496800.

The previous prime is 518059. The next prime is 518083. The reversal of 518081 is 180815.

Added to its reverse (180815) it gives a square (698896 = 836²).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 518081 - 2⁶ = 518017 is a prime.

It is a super-2 number, since 2×518081² = 536815845122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (518083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3356 + ... + 3506.

It is an arithmetic number, because the mean of its divisors is an integer number (67488).

2⁵¹⁸⁰⁸¹ is an apocalyptic number.

It is an amenable number.

518081 is a deficient number, since it is larger than the sum of its proper divisors (21823).

518081 is a wasteful number, since it uses less digits than its factorization.

518081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271.

The product of its (nonzero) digits is 320, while the sum is 23.

The square root of 518081 is about 719.7784381322. The cubic root of 518081 is about 80.3154730740.

Adding to 518081 its reverse (180815), we get a palindrome (698896).

The spelling of 518081 in words is "five hundred eighteen thousand, eighty-one".