5218218 has 24 divisors (see below), whose sum is σ = 11971908. Its totient is φ = 1636992.

The previous prime is 5218211. The next prime is 5218229. The reversal of 5218218 is 8128125.

It can be written as a sum of positive squares in 2 ways, for example, as 5184729 + 33489 = 2277^2 + 183^2 .

It is a junction number, because it is equal to n+sod(n) for n = 5218191 and 5218200.

It is not an unprimeable number, because it can be changed into a prime (5218211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8221 + ... + 8832.

Almost surely, 2^5218218 is an apocalyptic number.

5218218 is an abundant number, since it is smaller than the sum of its proper divisors (6753690).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5218218 is a wasteful number, since it uses less digits than its factorization.

5218218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17078 (or 17075 counting only the distinct ones).

The product of its digits is 1280, while the sum is 27.

The square root of 5218218 is about 2284.3419183651. The cubic root of 5218218 is about 173.4499076100.

The spelling of 5218218 in words is "five million, two hundred eighteen thousand, two hundred eighteen".