278159 has 8 divisors (see below), whose sum is σ = 322560. Its totient is φ = 234936.

The previous prime is 278149. The next prime is 278177. The reversal of 278159 is 951872.

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 278159 - 2⁴ = 278143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278119) 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, 302 + ... + 804.

It is an arithmetic number, because the mean of its divisors is an integer number (40320).

2²⁷⁸¹⁵⁹ is an apocalyptic number.

278159 is a deficient number, since it is larger than the sum of its proper divisors (44401).

278159 is an equidigital number, since it uses as much as digits as its factorization.

278159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589.

The product of its digits is 5040, while the sum is 32.

The square root of 278159 is about 527.4078118496. The cubic root of 278159 is about 65.2776290659.

The spelling of 278159 in words is "two hundred seventy-eight thousand, one hundred fifty-nine".