255438459 has 6 divisors (see below), whose sum is σ = 368966676. Its totient is φ = 170292300.

The previous prime is 255438401. The next prime is 255438497. The reversal of 255438459 is 954834552.

255438459 is a `hidden beast` number, since 25 + 543 + 84 + 5 + 9 = 666.

It is not a de Polignac number, because 255438459 - 2⁹ = 255437947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255438059) 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 5 ways as a sum of consecutive naturals, for example, 14191017 + ... + 14191034.

It is an arithmetic number, because the mean of its divisors is an integer number (61494446).

Almost surely, 2^255438459 is an apocalyptic number.

255438459 is a deficient number, since it is larger than the sum of its proper divisors (113528217).

255438459 is a wasteful number, since it uses less digits than its factorization.

255438459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28382057 (or 28382054 counting only the distinct ones).

The product of its digits is 864000, while the sum is 45.

The square root of 255438459 is about 15982.4422101255. The cubic root of 255438459 is about 634.4958148859.

The spelling of 255438459 in words is "two hundred fifty-five million, four hundred thirty-eight thousand, four hundred fifty-nine".