256055417 has 2 divisors, whose sum is σ = 256055418. Its totient is φ = 256055416.

The previous prime is 256055407. The next prime is 256055431. The reversal of 256055417 is 714550652.

256055417 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 176916601 + 79138816 = 13301^2 + 8896^2 .

It is a cyclic number.

It is not a de Polignac number, because 256055417 - 2¹⁸ = 255793273 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (256055407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128027708 + 128027709.

It is an arithmetic number, because the mean of its divisors is an integer number (128027709).

Almost surely, 2^256055417 is an apocalyptic number.

It is an amenable number.

256055417 is a deficient number, since it is larger than the sum of its proper divisors (1).

256055417 is an equidigital number, since it uses as much as digits as its factorization.

256055417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42000, while the sum is 35.

The square root of 256055417 is about 16001.7316875393. The cubic root of 256055417 is about 635.0062346713.

The spelling of 256055417 in words is "two hundred fifty-six million, fifty-five thousand, four hundred seventeen".