2645156 has 18 divisors (see below), whose sum is σ = 4779558. Its totient is φ = 1280160.

The previous prime is 2645141. The next prime is 2645171. The reversal of 2645156 is 6515462.

It is an interprime number because it is at equal distance from previous prime (2645141) and next prime (2645171).

It can be written as a sum of positive squares in only one way, i.e., 1612900 + 1032256 = 1270^2 + 1016^2 .

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20765 + ... + 20891.

It is an arithmetic number, because the mean of its divisors is an integer number (265531).

2^2645156 is an apocalyptic number.

It is an amenable number.

2645156 is a deficient number, since it is larger than the sum of its proper divisors (2134402).

2645156 is a wasteful number, since it uses less digits than its factorization.

2645156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299 (or 170 counting only the distinct ones).

The product of its digits is 7200, while the sum is 29.

The square root of 2645156 is about 1626.3935563079. The cubic root of 2645156 is about 138.2983811955.

The spelling of 2645156 in words is "two million, six hundred forty-five thousand, one hundred fifty-six".