2218513 has 4 divisors (see below), whose sum is σ = 2420208. Its totient is φ = 2016820.

The previous prime is 2218451. The next prime is 2218519. The reversal of 2218513 is 3158122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2218513 - 2⁹ = 2218001 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2218519) 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, 100831 + ... + 100852.

It is an arithmetic number, because the mean of its divisors is an integer number (605052).

2^2218513 is an apocalyptic number.

It is an amenable number.

2218513 is a deficient number, since it is larger than the sum of its proper divisors (201695).

2218513 is a wasteful number, since it uses less digits than its factorization.

2218513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201694.

The product of its digits is 480, while the sum is 22.

The square root of 2218513 is about 1489.4673544593. The cubic root of 2218513 is about 130.4229420347.

The spelling of 2218513 in words is "two million, two hundred eighteen thousand, five hundred thirteen".