278608055 has 8 divisors (see below), whose sum is σ = 364723344. Its totient is φ = 202624000.

The previous prime is 278608037. The next prime is 278608061. The reversal of 278608055 is 550806872.

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

It is not a de Polignac number, because 278608055 - 2¹⁴ = 278591671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2532746 + ... + 2532855.

It is an arithmetic number, because the mean of its divisors is an integer number (45590418).

Almost surely, 2^278608055 is an apocalyptic number.

278608055 is a deficient number, since it is larger than the sum of its proper divisors (86115289).

278608055 is a wasteful number, since it uses less digits than its factorization.

278608055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5065617.

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 278608055 is about 16691.5563983710. The cubic root of 278608055 is about 653.1273786533.

The spelling of 278608055 in words is "two hundred seventy-eight million, six hundred eight thousand, fifty-five".