2126556 has 36 divisors (see below), whose sum is σ = 5660200. Its totient is φ = 671328.

The previous prime is 2126549. The next prime is 2126567. The reversal of 2126556 is 6556212.

2126556 is a `hidden beast` number, since 2 + 1 + 2 + 655 + 6 = 666.

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

It is a super-2 number, since 2×2126556² = 9044480842272, which contains 22 as substring.

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, 871 + ... + 2238.

2^2126556 is an apocalyptic number.

It is an amenable number.

2126556 is an abundant number, since it is smaller than the sum of its proper divisors (3533644).

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

2126556 is a wasteful number, since it uses less digits than its factorization.

2126556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3138 (or 3133 counting only the distinct ones).

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

The square root of 2126556 is about 1458.2715796449. The cubic root of 2126556 is about 128.5954515958.

It can be divided in two parts, 21265 and 56, that added together give a triangular number (21321 = T₂₀₆).

The spelling of 2126556 in words is "two million, one hundred twenty-six thousand, five hundred fifty-six".