518043 has 4 divisors (see below), whose sum is σ = 690728. Its totient is φ = 345360.

The previous prime is 518017. The next prime is 518047. The reversal of 518043 is 340815.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 518043 - 2¹⁴ = 501659 is a prime.

It is a D-number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 518043.

It is not an unprimeable number, because it can be changed into a prime (518047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86338 + ... + 86343.

It is an arithmetic number, because the mean of its divisors is an integer number (172682).

2⁵¹⁸⁰⁴³ is an apocalyptic number.

518043 is a deficient number, since it is larger than the sum of its proper divisors (172685).

518043 is a wasteful number, since it uses less digits than its factorization.

518043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172684.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 518043 is about 719.7520406362. The cubic root of 518043 is about 80.3135093768.

Adding to 518043 its reverse (340815), we get a palindrome (858858).

The spelling of 518043 in words is "five hundred eighteen thousand, forty-three".