2056256717 has 2 divisors, whose sum is σ = 2056256718. Its totient is φ = 2056256716.

The previous prime is 2056256693. The next prime is 2056256767. The reversal of 2056256717 is 7176526502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1611299881 + 444956836 = 40141^2 + 21094^2 .

It is a cyclic number.

It is not a de Polignac number, because 2056256717 - 2¹⁰ = 2056255693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2056256767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1028128358 + 1028128359.

It is an arithmetic number, because the mean of its divisors is an integer number (1028128359).

Almost surely, 2^2056256717 is an apocalyptic number.

It is an amenable number.

2056256717 is a deficient number, since it is larger than the sum of its proper divisors (1).

2056256717 is an equidigital number, since it uses as much as digits as its factorization.

2056256717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 176400, while the sum is 41.

The square root of 2056256717 is about 45345.9669320216. The cubic root of 2056256717 is about 1271.6251575785.

The spelling of 2056256717 in words is "two billion, fifty-six million, two hundred fifty-six thousand, seven hundred seventeen".