256523241 has 48 divisors (see below), whose sum is σ = 390009600. Its totient is φ = 149700096.

The previous prime is 256523231. The next prime is 256523261. The reversal of 256523241 is 142325652.

It is not a de Polignac number, because 256523241 - 2⁶ = 256523177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 256523199 and 256523208.

It is not an unprimeable number, because it can be changed into a prime (256523231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1073200 + ... + 1073438.

It is an arithmetic number, because the mean of its divisors is an integer number (8125200).

Almost surely, 2^256523241 is an apocalyptic number.

It is an amenable number.

256523241 is a deficient number, since it is larger than the sum of its proper divisors (133486359).

256523241 is a wasteful number, since it uses less digits than its factorization.

256523241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370 (or 357 counting only the distinct ones).

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

The square root of 256523241 is about 16016.3429346402. The cubic root of 256523241 is about 635.3927270735.

Adding to 256523241 its reverse (142325652), we get a palindrome (398848893).

The spelling of 256523241 in words is "two hundred fifty-six million, five hundred twenty-three thousand, two hundred forty-one".