2218558 has 12 divisors (see below), whose sum is σ = 3449160. Its totient is φ = 1070216.

The previous prime is 2218549. The next prime is 2218561. The reversal of 2218558 is 8558122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1023 + ... + 2341.

It is an arithmetic number, because the mean of its divisors is an integer number (287430).

2^2218558 is an apocalyptic number.

2218558 is a deficient number, since it is larger than the sum of its proper divisors (1230602).

2218558 is a wasteful number, since it uses less digits than its factorization.

2218558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379 (or 1350 counting only the distinct ones).

The product of its digits is 6400, while the sum is 31.

The square root of 2218558 is about 1489.4824604540. The cubic root of 2218558 is about 130.4238238555.

The spelling of 2218558 in words is "two million, two hundred eighteen thousand, five hundred fifty-eight".