255963 has 8 divisors (see below), whose sum is σ = 349776. Its totient is φ = 166400.

The previous prime is 255961. The next prime is 255971. The reversal of 255963 is 369552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 255963 - 2¹ = 255961 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 255963.

It is not an unprimeable number, because it can be changed into a prime (255961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 918 + ... + 1163.

It is an arithmetic number, because the mean of its divisors is an integer number (43722).

2²⁵⁵⁹⁶³ is an apocalyptic number.

255963 is a deficient number, since it is larger than the sum of its proper divisors (93813).

255963 is a wasteful number, since it uses less digits than its factorization.

255963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2125.

The product of its digits is 8100, while the sum is 30.

The square root of 255963 is about 505.9278604702. The cubic root of 255963 is about 63.4929828772.

The spelling of 255963 in words is "two hundred fifty-five thousand, nine hundred sixty-three".