256056653 has 2 divisors, whose sum is σ = 256056654. Its totient is φ = 256056652.

The previous prime is 256056641. The next prime is 256056659. The reversal of 256056653 is 356650652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 233570089 + 22486564 = 15283^2 + 4742^2 .

It is a cyclic number.

It is not a de Polignac number, because 256056653 - 2¹⁸ = 255794509 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256056659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128028326 + 128028327.

It is an arithmetic number, because the mean of its divisors is an integer number (128028327).

Almost surely, 2^256056653 is an apocalyptic number.

It is an amenable number.

256056653 is a deficient number, since it is larger than the sum of its proper divisors (1).

256056653 is an equidigital number, since it uses as much as digits as its factorization.

256056653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162000, while the sum is 38.

The square root of 256056653 is about 16001.7703083128. The cubic root of 256056653 is about 635.0072564116.

The spelling of 256056653 in words is "two hundred fifty-six million, fifty-six thousand, six hundred fifty-three".