255286138 has 8 divisors (see below), whose sum is σ = 383437332. Its totient is φ = 127473696.

The previous prime is 255286133. The next prime is 255286153. The reversal of 255286138 is 831682552.

It can be written as a sum of positive squares in 2 ways, for example, as 255264529 + 21609 = 15977^2 + 147^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 255286138.

It is not an unprimeable number, because it can be changed into a prime (255286133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82795 + ... + 85822.

Almost surely, 2^255286138 is an apocalyptic number.

255286138 is a deficient number, since it is larger than the sum of its proper divisors (128151194).

255286138 is a wasteful number, since it uses less digits than its factorization.

255286138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169376.

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

The square root of 255286138 is about 15977.6762390530. The cubic root of 255286138 is about 634.3696706679.

The spelling of 255286138 in words is "two hundred fifty-five million, two hundred eighty-six thousand, one hundred thirty-eight".