255516278 has 16 divisors (see below), whose sum is σ = 387540720. Its totient is φ = 126341376.

The previous prime is 255516271. The next prime is 255516301. The reversal of 255516278 is 872615552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255516271) 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 7 ways as a sum of consecutive naturals, for example, 127601 + ... + 129587.

It is an arithmetic number, because the mean of its divisors is an integer number (24221295).

Almost surely, 2^255516278 is an apocalyptic number.

255516278 is a deficient number, since it is larger than the sum of its proper divisors (132024442).

255516278 is a wasteful number, since it uses less digits than its factorization.

255516278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2671.

The product of its digits is 168000, while the sum is 41.

The square root of 255516278 is about 15984.8765400300. The cubic root of 255516278 is about 634.5602411236.

The spelling of 255516278 in words is "two hundred fifty-five million, five hundred sixteen thousand, two hundred seventy-eight".