256151459 has 2 divisors, whose sum is σ = 256151460. Its totient is φ = 256151458.

The previous prime is 256151449. The next prime is 256151471. The reversal of 256151459 is 954151652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 256151459 - 2¹² = 256147363 is a prime.

It is a super-2 number, since 2×256151459² = 131227139895657362, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (256151449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128075729 + 128075730.

It is an arithmetic number, because the mean of its divisors is an integer number (128075730).

Almost surely, 2^256151459 is an apocalyptic number.

256151459 is a deficient number, since it is larger than the sum of its proper divisors (1).

256151459 is an equidigital number, since it uses as much as digits as its factorization.

256151459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54000, while the sum is 38.

The square root of 256151459 is about 16004.7323938890. The cubic root of 256151459 is about 635.0856180667.

The spelling of 256151459 in words is "two hundred fifty-six million, one hundred fifty-one thousand, four hundred fifty-nine".