256206359 has 2 divisors, whose sum is σ = 256206360. Its totient is φ = 256206358.

The previous prime is 256206323. The next prime is 256206373. The reversal of 256206359 is 953602652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256206359 - 2¹² = 256202263 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 (256206059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128103179 + 128103180.

It is an arithmetic number, because the mean of its divisors is an integer number (128103180).

Almost surely, 2^256206359 is an apocalyptic number.

256206359 is a deficient number, since it is larger than the sum of its proper divisors (1).

256206359 is an equidigital number, since it uses as much as digits as its factorization.

256206359 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 38.

The square root of 256206359 is about 16006.4474197118. The cubic root of 256206359 is about 635.1309866805.

The spelling of 256206359 in words is "two hundred fifty-six million, two hundred six thousand, three hundred fifty-nine".