278055 has 24 divisors (see below), whose sum is σ = 497952. Its totient is φ = 143424.

The previous prime is 278051. The next prime is 278063. The reversal of 278055 is 550872.

It is a happy number.

It is not a de Polignac number, because 278055 - 2² = 278051 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 278055.

It is not an unprimeable number, because it can be changed into a prime (278051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1582 + ... + 1748.

It is an arithmetic number, because the mean of its divisors is an integer number (20748).

2²⁷⁸⁰⁵⁵ is an apocalyptic number.

278055 is a deficient number, since it is larger than the sum of its proper divisors (219897).

278055 is a wasteful number, since it uses less digits than its factorization.

278055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 278055 is about 527.3092072020. The cubic root of 278055 is about 65.2694925688.

The spelling of 278055 in words is "two hundred seventy-eight thousand, fifty-five".