255449816 has 16 divisors (see below), whose sum is σ = 479245200. Its totient is φ = 127651104.

The previous prime is 255449809. The next prime is 255449819. The reversal of 255449816 is 618944552.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255449819) 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 3 ways as a sum of consecutive naturals, for example, 7205 + ... + 23723.

It is an arithmetic number, because the mean of its divisors is an integer number (29952825).

Almost surely, 2^255449816 is an apocalyptic number.

It is an amenable number.

255449816 is a deficient number, since it is larger than the sum of its proper divisors (223795384).

255449816 is a wasteful number, since it uses less digits than its factorization.

255449816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18458 (or 18454 counting only the distinct ones).

The product of its digits is 345600, while the sum is 44.

The square root of 255449816 is about 15982.7975023148. The cubic root of 255449816 is about 634.5052181452.

The spelling of 255449816 in words is "two hundred fifty-five million, four hundred forty-nine thousand, eight hundred sixteen".