278016055 has 8 divisors (see below), whose sum is σ = 336858912. Its totient is φ = 220253088.

The previous prime is 278016043. The next prime is 278016059. The reversal of 278016055 is 550610872.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 278016055 - 2¹¹ = 278014007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 278016055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278016059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269404 + ... + 270433.

It is an arithmetic number, because the mean of its divisors is an integer number (42107364).

Almost surely, 2^278016055 is an apocalyptic number.

278016055 is a deficient number, since it is larger than the sum of its proper divisors (58842857).

278016055 is a wasteful number, since it uses less digits than its factorization.

278016055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539945.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 278016055 is about 16673.8134510375. The cubic root of 278016055 is about 652.6644516326.

It can be divided in two parts, 27801 and 6055, that added together give a square (33856 = 184²).

The spelling of 278016055 in words is "two hundred seventy-eight million, sixteen thousand, fifty-five".