255491178 has 16 divisors (see below), whose sum is σ = 513216480. Its totient is φ = 84791376.

The previous prime is 255491177. The next prime is 255491183. The reversal of 255491178 is 871194552.

It is not an unprimeable number, because it can be changed into a prime (255491177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91600 + ... + 94347.

It is an arithmetic number, because the mean of its divisors is an integer number (32076030).

Almost surely, 2^255491178 is an apocalyptic number.

255491178 is an abundant number, since it is smaller than the sum of its proper divisors (257725302).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255491178 is a wasteful number, since it uses less digits than its factorization.

255491178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186181.

The product of its digits is 100800, while the sum is 42.

The square root of 255491178 is about 15984.0914036426. The cubic root of 255491178 is about 634.5394622992.

The spelling of 255491178 in words is "two hundred fifty-five million, four hundred ninety-one thousand, one hundred seventy-eight".