2056559779 has 2 divisors, whose sum is σ = 2056559780. Its totient is φ = 2056559778.

The previous prime is 2056559767. The next prime is 2056559849. The reversal of 2056559779 is 9779556502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2056559779 - 2¹¹ = 2056557731 is a prime.

It is not a weakly prime, because it can be changed into another prime (2056559749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1028279889 + 1028279890.

It is an arithmetic number, because the mean of its divisors is an integer number (1028279890).

Almost surely, 2^2056559779 is an apocalyptic number.

2056559779 is a deficient number, since it is larger than the sum of its proper divisors (1).

2056559779 is an equidigital number, since it uses as much as digits as its factorization.

2056559779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5953500, while the sum is 55.

The square root of 2056559779 is about 45349.3084732281. The cubic root of 2056559779 is about 1271.6876274586.

The spelling of 2056559779 in words is "two billion, fifty-six million, five hundred fifty-nine thousand, seven hundred seventy-nine".