2661056 has 14 divisors (see below), whose sum is σ = 5280660. Its totient is φ = 1330496.

The previous prime is 2661013. The next prime is 2661067. The reversal of 2661056 is 6501662.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20726 + ... + 20853.

It is an arithmetic number, because the mean of its divisors is an integer number (377190).

2^2661056 is an apocalyptic number.

It is an amenable number.

2661056 is a deficient number, since it is larger than the sum of its proper divisors (2619604).

2661056 is an equidigital number, since it uses as much as digits as its factorization.

2661056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41591 (or 41581 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 2661056 is about 1631.2743484773. The cubic root of 2661056 is about 138.5749311070.

Subtracting 2661056 from its reverse (6501662), we obtain a triangular number (3840606 = T₂₇₇₁).

The spelling of 2661056 in words is "two million, six hundred sixty-one thousand, fifty-six".