278097 has 4 divisors (see below), whose sum is σ = 370800. Its totient is φ = 185396.

The previous prime is 278087. The next prime is 278111. The reversal of 278097 is 790872.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 278097 - 2¹⁰ = 277073 is a prime.

It is a D-number.

278097 is a lucky number.

It is a nialpdrome in base 13.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 278097.

It is not an unprimeable number, because it can be changed into a prime (278017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46347 + ... + 46352.

It is an arithmetic number, because the mean of its divisors is an integer number (92700).

2²⁷⁸⁰⁹⁷ is an apocalyptic number.

It is an amenable number.

278097 is a deficient number, since it is larger than the sum of its proper divisors (92703).

278097 is an equidigital number, since it uses as much as digits as its factorization.

278097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92702.

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 278097 is about 527.3490305291. The cubic root of 278097 is about 65.2727787061.

The spelling of 278097 in words is "two hundred seventy-eight thousand, ninety-seven".