256563110 has 32 divisors (see below), whose sum is σ = 470400480. Its totient is φ = 100735488.

The previous prime is 256563103. The next prime is 256563119. The reversal of 256563110 is 11365652.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256563119) 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 15 ways as a sum of consecutive naturals, for example, 122129 + ... + 124211.

It is an arithmetic number, because the mean of its divisors is an integer number (14700015).

Almost surely, 2^256563110 is an apocalyptic number.

256563110 is a deficient number, since it is larger than the sum of its proper divisors (213837370).

256563110 is a wasteful number, since it uses less digits than its factorization.

256563110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2312.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 256563110 is about 16017.5875212218. The cubic root of 256563110 is about 635.4256430778.

The spelling of 256563110 in words is "two hundred fifty-six million, five hundred sixty-three thousand, one hundred ten".