518881 has 8 divisors (see below), whose sum is σ = 579744. Its totient is φ = 460320.

The previous prime is 518867. The next prime is 518893. The reversal of 518881 is 188815.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-518881 is a prime.

It is a super-2 number, since 2×518881² = 538474984322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (518801) 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, 76 + ... + 1021.

It is an arithmetic number, because the mean of its divisors is an integer number (72468).

2⁵¹⁸⁸⁸¹ is an apocalyptic number.

It is an amenable number.

518881 is a deficient number, since it is larger than the sum of its proper divisors (60863).

518881 is a wasteful number, since it uses less digits than its factorization.

518881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151.

The product of its digits is 2560, while the sum is 31.

The square root of 518881 is about 720.3339503314. Note that the first 3 decimals coincide. The cubic root of 518881 is about 80.3567917962.

The spelling of 518881 in words is "five hundred eighteen thousand, eight hundred eighty-one".