2166522 has 16 divisors (see below), whose sum is σ = 4439232. Its totient is φ = 704480.

The previous prime is 2166511. The next prime is 2166523. The reversal of 2166522 is 2256612.

2166522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2166492 and 2166501.

It is not an unprimeable number, because it can be changed into a prime (2166523) 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, 4158 + ... + 4649.

It is an arithmetic number, because the mean of its divisors is an integer number (277452).

2^2166522 is an apocalyptic number.

2166522 is an abundant number, since it is smaller than the sum of its proper divisors (2272710).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2166522 is a wasteful number, since it uses less digits than its factorization.

2166522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8853.

The product of its digits is 1440, while the sum is 24.

The square root of 2166522 is about 1471.9110027444. The cubic root of 2166522 is about 129.3960545911.

The spelling of 2166522 in words is "two million, one hundred sixty-six thousand, five hundred twenty-two".