2218015 has 4 divisors (see below), whose sum is σ = 2661624. Its totient is φ = 1774408.

The previous prime is 2218001. The next prime is 2218037. The reversal of 2218015 is 5108122.

2218015 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2218015 - 2⁹ = 2217503 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2217983 and 2218001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221797 + ... + 221806.

It is an arithmetic number, because the mean of its divisors is an integer number (665406).

2^2218015 is an apocalyptic number.

2218015 is a deficient number, since it is larger than the sum of its proper divisors (443609).

2218015 is an equidigital number, since it uses as much as digits as its factorization.

2218015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443608.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 2218015 is about 1489.3001712214. The cubic root of 2218015 is about 130.4131824216.

The spelling of 2218015 in words is "two million, two hundred eighteen thousand, fifteen".