2135556 has 36 divisors (see below), whose sum is σ = 5450172. Its totient is φ = 705024.

The previous prime is 2135537. The next prime is 2135563. The reversal of 2135556 is 6555312.

It can be written as a sum of positive squares in 2 ways, for example, as 695556 + 1440000 = 834^2 + 1200^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4716 + ... + 5148.

2^2135556 is an apocalyptic number.

It is an amenable number.

2135556 is an abundant number, since it is smaller than the sum of its proper divisors (3314616).

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

2135556 is a wasteful number, since it uses less digits than its factorization.

2135556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580 (or 575 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 2135556 is about 1461.3541665182. The cubic root of 2135556 is about 128.7766099522.

The spelling of 2135556 in words is "two million, one hundred thirty-five thousand, five hundred fifty-six".