5218687 has 4 divisors (see below), whose sum is σ = 5224576. Its totient is φ = 5212800.

The previous prime is 5218669. The next prime is 5218691. The reversal of 5218687 is 7868125.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 5218687 - 2¹⁵ = 5185919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5218607) 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, 1314 + ... + 3487.

It is an arithmetic number, because the mean of its divisors is an integer number (1306144).

Almost surely, 2^5218687 is an apocalyptic number.

5218687 is a deficient number, since it is larger than the sum of its proper divisors (5889).

5218687 is a wasteful number, since it uses less digits than its factorization.

5218687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5888.

The product of its digits is 26880, while the sum is 37.

The square root of 5218687 is about 2284.4445714440. Note that the first 3 decimals coincide. The cubic root of 5218687 is about 173.4551038647.

The spelling of 5218687 in words is "five million, two hundred eighteen thousand, six hundred eighty-seven".