255861823 has 8 divisors (see below), whose sum is σ = 292661280. Its totient is φ = 219124320.

The previous prime is 255861797. The next prime is 255861833. The reversal of 255861823 is 328168552.

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 255861823 - 2⁹ = 255861311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255861833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6268 + ... + 23473.

It is an arithmetic number, because the mean of its divisors is an integer number (36582660).

Almost surely, 2^255861823 is an apocalyptic number.

255861823 is a deficient number, since it is larger than the sum of its proper divisors (36799457).

255861823 is a wasteful number, since it uses less digits than its factorization.

255861823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30977.

The product of its digits is 115200, while the sum is 40.

The square root of 255861823 is about 15995.6813859241. The cubic root of 255861823 is about 634.8461594380.

The spelling of 255861823 in words is "two hundred fifty-five million, eight hundred sixty-one thousand, eight hundred twenty-three".