2166572 has 12 divisors (see below), whose sum is σ = 3894240. Its totient is φ = 1053936.

The previous prime is 2166557. The next prime is 2166581. The reversal of 2166572 is 2756612.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7172 + ... + 7467.

It is an arithmetic number, because the mean of its divisors is an integer number (324520).

2^2166572 is an apocalyptic number.

It is an amenable number.

2166572 is a deficient number, since it is larger than the sum of its proper divisors (1727668).

2166572 is a wasteful number, since it uses less digits than its factorization.

2166572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14680 (or 14678 counting only the distinct ones).

The product of its digits is 5040, while the sum is 29.

The square root of 2166572 is about 1471.9279873689. The cubic root of 2166572 is about 129.3970500041.

The spelling of 2166572 in words is "two million, one hundred sixty-six thousand, five hundred seventy-two".