256241523 has 4 divisors (see below), whose sum is σ = 341655368. Its totient is φ = 170827680.

The previous prime is 256241497. The next prime is 256241549. The reversal of 256241523 is 325142652.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (256241497) and next prime (256241549).

It is not a de Polignac number, because 256241523 - 2¹⁰ = 256240499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256243523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42706918 + ... + 42706923.

It is an arithmetic number, because the mean of its divisors is an integer number (85413842).

Almost surely, 2^256241523 is an apocalyptic number.

256241523 is a deficient number, since it is larger than the sum of its proper divisors (85413845).

256241523 is an equidigital number, since it uses as much as digits as its factorization.

256241523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85413844.

The product of its digits is 14400, while the sum is 30.

The square root of 256241523 is about 16007.5458143964. The cubic root of 256241523 is about 635.1600423271.

The spelling of 256241523 in words is "two hundred fifty-six million, two hundred forty-one thousand, five hundred twenty-three".