256056593 has 8 divisors (see below), whose sum is σ = 275979648. Its totient is φ = 236165904.

The previous prime is 256056583. The next prime is 256056607. The reversal of 256056593 is 395650652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 256056593 - 2⁸ = 256056337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 256056593.

It is not an unprimeable number, because it can be changed into a prime (256056523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9830 + ... + 24672.

It is an arithmetic number, because the mean of its divisors is an integer number (34497456).

Almost surely, 2^256056593 is an apocalyptic number.

It is an amenable number.

256056593 is a deficient number, since it is larger than the sum of its proper divisors (19923055).

256056593 is a wasteful number, since it uses less digits than its factorization.

256056593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16183.

The product of its (nonzero) digits is 243000, while the sum is 41.

The square root of 256056593 is about 16001.7684335201. The cubic root of 256056593 is about 635.0072068126.

The spelling of 256056593 in words is "two hundred fifty-six million, fifty-six thousand, five hundred ninety-three".