280097 has 2 divisors, whose sum is σ = 280098. Its totient is φ = 280096.

The previous prime is 280069. The next prime is 280099. The reversal of 280097 is 790082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 279841 + 256 = 529^2 + 16^2 .

It is a cyclic number.

It is not a de Polignac number, because 280097 - 2¹⁰ = 279073 is a prime.

Together with 280099, it forms a pair of twin primes.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 280097.

It is not a weakly prime, because it can be changed into another prime (280099) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140048 + 140049.

It is an arithmetic number, because the mean of its divisors is an integer number (140049).

2²⁸⁰⁰⁹⁷ is an apocalyptic number.

It is an amenable number.

280097 is a deficient number, since it is larger than the sum of its proper divisors (1).

280097 is an equidigital number, since it uses as much as digits as its factorization.

280097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 280097 is about 529.2419106609. The cubic root of 280097 is about 65.4288799371.

The spelling of 280097 in words is "two hundred eighty thousand, ninety-seven".