255123923 has 4 divisors (see below), whose sum is σ = 255268320. Its totient is φ = 254979528.

The previous prime is 255123919. The next prime is 255123931. The reversal of 255123923 is 329321552.

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

It is a cyclic number.

It is not a de Polignac number, because 255123923 - 2² = 255123919 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 255123923.

It is not an unprimeable number, because it can be changed into a prime (255123023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69515 + ... + 73092.

It is an arithmetic number, because the mean of its divisors is an integer number (63817080).

Almost surely, 2^255123923 is an apocalyptic number.

255123923 is a deficient number, since it is larger than the sum of its proper divisors (144397).

255123923 is a wasteful number, since it uses less digits than its factorization.

255123923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144396.

The product of its digits is 16200, while the sum is 32.

The square root of 255123923 is about 15972.5991310118. The cubic root of 255123923 is about 634.2352775766.

The spelling of 255123923 in words is "two hundred fifty-five million, one hundred twenty-three thousand, nine hundred twenty-three".