255331138 has 16 divisors (see below), whose sum is σ = 396663480. Its totient is φ = 123120256.

The previous prime is 255331099. The next prime is 255331199. The reversal of 255331138 is 831133552.

It can be written as a sum of positive squares in 4 ways, for example, as 232166169 + 23164969 = 15237^2 + 4813^2 .

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, 61620 + ... + 65632.

Almost surely, 2^255331138 is an apocalyptic number.

255331138 is a deficient number, since it is larger than the sum of its proper divisors (141332342).

255331138 is a wasteful number, since it uses less digits than its factorization.

255331138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5141.

The product of its digits is 10800, while the sum is 31.

The square root of 255331138 is about 15979.0843917917. The cubic root of 255331138 is about 634.4069425154.

The spelling of 255331138 in words is "two hundred fifty-five million, three hundred thirty-one thousand, one hundred thirty-eight".