256097056 has 12 divisors (see below), whose sum is σ = 504191142. Its totient is φ = 128048512.

The previous prime is 256097053. The next prime is 256097077. The reversal of 256097056 is 650790652.

256097056 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 196560400 + 59536656 = 14020^2 + 7716^2 .

It is not an unprimeable number, because it can be changed into a prime (256097053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4001485 + ... + 4001548.

Almost surely, 2^256097056 is an apocalyptic number.

It is an amenable number.

256097056 is a deficient number, since it is larger than the sum of its proper divisors (248094086).

256097056 is an equidigital number, since it uses as much as digits as its factorization.

256097056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8003043 (or 8003035 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 256097056 is about 16003.0327125829. The cubic root of 256097056 is about 635.0406537719.

The spelling of 256097056 in words is "two hundred fifty-six million, ninety-seven thousand, fifty-six".