2165526 has 24 divisors (see below), whose sum is σ = 5118984. Its totient is φ = 656160.

The previous prime is 2165521. The next prime is 2165531. The reversal of 2165526 is 6255612.

2165526 is a `hidden beast` number, since 2 + 1 + 655 + 2 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (2165521) and next prime (2165531).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2165526.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5271 + ... + 5666.

It is an arithmetic number, because the mean of its divisors is an integer number (213291).

2^2165526 is an apocalyptic number.

2165526 is an abundant number, since it is smaller than the sum of its proper divisors (2953458).

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

2165526 is a wasteful number, since it uses less digits than its factorization.

2165526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10956 (or 10953 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 2165526 is about 1471.5726281771. The cubic root of 2165526 is about 129.3762227708.

The spelling of 2165526 in words is "two million, one hundred sixty-five thousand, five hundred twenty-six".