518947 has 16 divisors (see below), whose sum is σ = 645120. Its totient is φ = 410400.

The previous prime is 518933. The next prime is 518953. The reversal of 518947 is 749815.

It is a happy number.

It is not a de Polignac number, because 518947 - 2¹⁵ = 486179 is a prime.

It is a Duffinian number.

518947 is a lucky number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 2622 + ... + 2812.

It is an arithmetic number, because the mean of its divisors is an integer number (40320).

2⁵¹⁸⁹⁴⁷ is an apocalyptic number.

518947 is a deficient number, since it is larger than the sum of its proper divisors (126173).

518947 is a wasteful number, since it uses less digits than its factorization.

518947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234.

The product of its digits is 10080, while the sum is 34.

The square root of 518947 is about 720.3797609595. The cubic root of 518947 is about 80.3601986939.

It can be divided in two parts, 51 and 8947, that added together give a palindrome (8998).

The spelling of 518947 in words is "five hundred eighteen thousand, nine hundred forty-seven".