256483417 has 2 divisors, whose sum is σ = 256483418. Its totient is φ = 256483416.

The previous prime is 256483411. The next prime is 256483421. The reversal of 256483417 is 714384652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169546441 + 86936976 = 13021^2 + 9324^2 .

It is a cyclic number.

It is not a de Polignac number, because 256483417 - 2⁷ = 256483289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 256483417.

It is not a weakly prime, because it can be changed into another prime (256483411) 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 as a sum of consecutive naturals, namely, 128241708 + 128241709.

It is an arithmetic number, because the mean of its divisors is an integer number (128241709).

Almost surely, 2^256483417 is an apocalyptic number.

It is an amenable number.

256483417 is a deficient number, since it is larger than the sum of its proper divisors (1).

256483417 is an equidigital number, since it uses as much as digits as its factorization.

256483417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 40.

The square root of 256483417 is about 16015.0996562619. The cubic root of 256483417 is about 635.3598448163.

The spelling of 256483417 in words is "two hundred fifty-six million, four hundred eighty-three thousand, four hundred seventeen".