255533 has 4 divisors (see below), whose sum is σ = 263808. Its totient is φ = 247260.

The previous prime is 255523. The next prime is 255551. The reversal of 255533 is 335552.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 255533 - 2⁴ = 255517 is a prime.

It is a super-2 number, since 2×255533² = 130594228178, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2³ + 5 + 5 + 5⁷ + 3⁵ + 3¹¹ .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 255499 and 255508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4091 + ... + 4152.

It is an arithmetic number, because the mean of its divisors is an integer number (65952).

2²⁵⁵⁵³³ is an apocalyptic number.

It is an amenable number.

255533 is a deficient number, since it is larger than the sum of its proper divisors (8275).

255533 is an equidigital number, since it uses as much as digits as its factorization.

255533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8274.

The product of its digits is 2250, while the sum is 23.

The square root of 255533 is about 505.5027200718. The cubic root of 255533 is about 63.4574083536.

The spelling of 255533 in words is "two hundred fifty-five thousand, five hundred thirty-three".