2165224 has 8 divisors (see below), whose sum is σ = 4059810. Its totient is φ = 1082608.

The previous prime is 2165213. The next prime is 2165231. The reversal of 2165224 is 4225612.

It can be written as a sum of positive squares in only one way, i.e., 1322500 + 842724 = 1150^2 + 918^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 2165195 and 2165204.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135319 + ... + 135334.

2^2165224 is an apocalyptic number.

It is an amenable number.

2165224 is a deficient number, since it is larger than the sum of its proper divisors (1894586).

2165224 is a wasteful number, since it uses less digits than its factorization.

2165224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270659 (or 270655 counting only the distinct ones).

The product of its digits is 960, while the sum is 22.

The square root of 2165224 is about 1471.4700132860. The cubic root of 2165224 is about 129.3702083066.

The spelling of 2165224 in words is "two million, one hundred sixty-five thousand, two hundred twenty-four".