2215166 has 4 divisors (see below), whose sum is σ = 3322752. Its totient is φ = 1107582.

The previous prime is 2215163. The next prime is 2215177. The reversal of 2215166 is 6615122.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 553790 + ... + 553793.

It is an arithmetic number, because the mean of its divisors is an integer number (830688).

2^2215166 is an apocalyptic number.

2215166 is a deficient number, since it is larger than the sum of its proper divisors (1107586).

2215166 is a wasteful number, since it uses less digits than its factorization.

2215166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107585.

The product of its digits is 720, while the sum is 23.

The square root of 2215166 is about 1488.3433743596. The cubic root of 2215166 is about 130.3573207085.

The spelling of 2215166 in words is "two million, two hundred fifteen thousand, one hundred sixty-six".