2056601165 has 4 divisors (see below), whose sum is σ = 2467921404. Its totient is φ = 1645280928.

The previous prime is 2056601161. The next prime is 2056601167. The reversal of 2056601165 is 5611066502.

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

It can be written as a sum of positive squares in 2 ways, for example, as 944578756 + 1112022409 = 30734^2 + 33347^2 .

It is a cyclic number.

It is not a de Polignac number, because 2056601165 - 2² = 2056601161 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2056601161) 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, 205660112 + ... + 205660121.

It is an arithmetic number, because the mean of its divisors is an integer number (616980351).

Almost surely, 2^2056601165 is an apocalyptic number.

It is an amenable number.

2056601165 is a deficient number, since it is larger than the sum of its proper divisors (411320239).

2056601165 is an equidigital number, since it uses as much as digits as its factorization.

2056601165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411320238.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 2056601165 is about 45349.7647733701. The cubic root of 2056601165 is about 1271.6961578390.

Adding to 2056601165 its reverse (5611066502), we get a palindrome (7667667667).

The spelling of 2056601165 in words is "two billion, fifty-six million, six hundred one thousand, one hundred sixty-five".