255123 has 16 divisors (see below), whose sum is σ = 412800. Its totient is φ = 154440.

The previous prime is 255121. The next prime is 255127. The reversal of 255123 is 321552.

255123 = 97² + 98² + ... + 118².

It is a happy number.

It is not a de Polignac number, because 255123 - 2¹ = 255121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 255096 and 255105.

It is not an unprimeable number, because it can be changed into a prime (255121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133 + ... + 726.

It is an arithmetic number, because the mean of its divisors is an integer number (25800).

2²⁵⁵¹²³ is an apocalyptic number.

255123 is a deficient number, since it is larger than the sum of its proper divisors (157677).

255123 is a wasteful number, since it uses less digits than its factorization.

255123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879 (or 873 counting only the distinct ones).

The product of its digits is 300, while the sum is 18.

The square root of 255123 is about 505.0970203832. The cubic root of 255123 is about 63.4234512720.

Adding to 255123 its reverse (321552), we get a palindrome (576675).

It can be divided in two parts, 255 and 123, that added together give a triangular number (378 = T₂₇).

The spelling of 255123 in words is "two hundred fifty-five thousand, one hundred twenty-three".