2056555211 has 4 divisors (see below), whose sum is σ = 2075422800. Its totient is φ = 2037687624.

The previous prime is 2056555187. The next prime is 2056555217. The reversal of 2056555211 is 1125556502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2056555211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2056555217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9433631 + ... + 9433848.

It is an arithmetic number, because the mean of its divisors is an integer number (518855700).

Almost surely, 2^2056555211 is an apocalyptic number.

2056555211 is a deficient number, since it is larger than the sum of its proper divisors (18867589).

2056555211 is a wasteful number, since it uses less digits than its factorization.

2056555211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18867588.

The product of its (nonzero) digits is 15000, while the sum is 32.

The square root of 2056555211 is about 45349.2581085953. The cubic root of 2056555211 is about 1271.6866859067.

The spelling of 2056555211 in words is "two billion, fifty-six million, five hundred fifty-five thousand, two hundred eleven".