256232241 has 10 divisors (see below), whose sum is σ = 382766802. Its totient is φ = 170821440.

The previous prime is 256232239. The next prime is 256232243. The reversal of 256232241 is 142232652.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (256232239) and next prime (256232243).

It can be written as a sum of positive squares in only one way, i.e., 246647025 + 9585216 = 15705^2 + 3096^2 .

It is not a de Polignac number, because 256232241 - 2¹ = 256232239 is a prime.

It is a super-2 number, since 2×256232241² = 131309922655764162, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256232243) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1581600 + ... + 1581761.

Almost surely, 2^256232241 is an apocalyptic number.

It is an amenable number.

256232241 is a deficient number, since it is larger than the sum of its proper divisors (126534561).

256232241 is an equidigital number, since it uses as much as digits as its factorization.

256232241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3163373 (or 3163364 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 256232241 is about 16007.2558860037. The cubic root of 256232241 is about 635.1523729655.

Adding to 256232241 its reverse (142232652), we get a palindrome (398464893).

The spelling of 256232241 in words is "two hundred fifty-six million, two hundred thirty-two thousand, two hundred forty-one".