255877138 has 8 divisors (see below), whose sum is σ = 418708080. Its totient is φ = 116307780.

The previous prime is 255877117. The next prime is 255877147. The reversal of 255877138 is 831778552.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5815368 + ... + 5815411.

It is an arithmetic number, because the mean of its divisors is an integer number (52338510).

Almost surely, 2^255877138 is an apocalyptic number.

255877138 is a deficient number, since it is larger than the sum of its proper divisors (162830942).

255877138 is a wasteful number, since it uses less digits than its factorization.

255877138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11630792.

The product of its digits is 470400, while the sum is 46.

The square root of 255877138 is about 15996.1601017244. The cubic root of 255877138 is about 634.8588257473.

The spelling of 255877138 in words is "two hundred fifty-five million, eight hundred seventy-seven thousand, one hundred thirty-eight".