256954 has 4 divisors (see below), whose sum is σ = 385434. Its totient is φ = 128476.

The previous prime is 256939. The next prime is 256957. The reversal of 256954 is 459652.

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

It can be written as a sum of positive squares in only one way, i.e., 225625 + 31329 = 475^2 + 177^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (256957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64237 + ... + 64240.

2²⁵⁶⁹⁵⁴ is an apocalyptic number.

256954 is a deficient number, since it is larger than the sum of its proper divisors (128480).

256954 is a wasteful number, since it uses less digits than its factorization.

256954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128479.

The product of its digits is 10800, while the sum is 31.

The square root of 256954 is about 506.9063029792. The cubic root of 256954 is about 63.5748182946.

The spelling of 256954 in words is "two hundred fifty-six thousand, nine hundred fifty-four".