2218541 has 8 divisors (see below), whose sum is σ = 2440704. Its totient is φ = 2003760.

The previous prime is 2218523. The next prime is 2218547. The reversal of 2218541 is 1458122.

2218541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2218541 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 (2218547) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1205 + ... + 2426.

It is an arithmetic number, because the mean of its divisors is an integer number (305088).

2^2218541 is an apocalyptic number.

It is an amenable number.

2218541 is a deficient number, since it is larger than the sum of its proper divisors (222163).

2218541 is a wasteful number, since it uses less digits than its factorization.

2218541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3691.

The product of its digits is 640, while the sum is 23.

The square root of 2218541 is about 1489.4767537629. The cubic root of 2218541 is about 130.4234907246.

The spelling of 2218541 in words is "two million, two hundred eighteen thousand, five hundred forty-one".