255568138 has 16 divisors (see below), whose sum is σ = 440323200. Its totient is φ = 108977616.

The previous prime is 255568073. The next prime is 255568141. The reversal of 255568138 is 831865552.

It is a junction number, because it is equal to n+sod(n) for n = 255568094 and 255568103.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43081 + ... + 48652.

It is an arithmetic number, because the mean of its divisors is an integer number (27520200).

Almost surely, 2^255568138 is an apocalyptic number.

255568138 is a deficient number, since it is larger than the sum of its proper divisors (184755062).

255568138 is a wasteful number, since it uses less digits than its factorization.

255568138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91941.

The product of its digits is 288000, while the sum is 43.

The square root of 255568138 is about 15986.4986160197. The cubic root of 255568138 is about 634.6031686795.

The spelling of 255568138 in words is "two hundred fifty-five million, five hundred sixty-eight thousand, one hundred thirty-eight".