256610043 has 12 divisors (see below), whose sum is σ = 371981688. Its totient is φ = 170462880.

The previous prime is 256610041. The next prime is 256610071. The reversal of 256610043 is 340016652.

256610043 is a `hidden beast` number, since 2 + 5 + 6 + 610 + 0 + 43 = 666.

It is not a de Polignac number, because 256610043 - 2¹ = 256610041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 256609989 and 256610016.

It is not an unprimeable number, because it can be changed into a prime (256610041) 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 11 ways as a sum of consecutive naturals, for example, 48205 + ... + 53262.

It is an arithmetic number, because the mean of its divisors is an integer number (30998474).

Almost surely, 2^256610043 is an apocalyptic number.

256610043 is a deficient number, since it is larger than the sum of its proper divisors (115371645).

256610043 is a wasteful number, since it uses less digits than its factorization.

256610043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101754 (or 101751 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 256610043 is about 16019.0525000700. The cubic root of 256610043 is about 635.4643867790.

Adding to 256610043 its reverse (340016652), we get a palindrome (596626695).

The spelling of 256610043 in words is "two hundred fifty-six million, six hundred ten thousand, forty-three".