255633 has 24 divisors (see below), whose sum is σ = 415872. Its totient is φ = 139104.

The previous prime is 255617. The next prime is 255637. The reversal of 255633 is 336552.

It is not a de Polignac number, because 255633 - 2⁴ = 255617 is a prime.

255633 is a lucky number.

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (255637) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5416 + ... + 5462.

It is an arithmetic number, because the mean of its divisors is an integer number (17328).

2²⁵⁵⁶³³ is an apocalyptic number.

It is an amenable number.

255633 is a deficient number, since it is larger than the sum of its proper divisors (160239).

255633 is a wasteful number, since it uses less digits than its factorization.

255633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101 (or 94 counting only the distinct ones).

The product of its digits is 2700, while the sum is 24.

The square root of 255633 is about 505.6016218328. The cubic root of 255633 is about 63.4656850579.

It can be divided in two parts, 2556 and 33, that multiplied together give a palindrome (84348).

The spelling of 255633 in words is "two hundred fifty-five thousand, six hundred thirty-three".