281897 has 12 divisors (see below), whose sum is σ = 358416. Its totient is φ = 219240.

The previous prime is 281893. The next prime is 281921. The reversal of 281897 is 798182.

It is a happy number.

It is not a de Polignac number, because 281897 - 2² = 281893 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (281893) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 278 + ... + 800.

It is an arithmetic number, because the mean of its divisors is an integer number (29868).

2²⁸¹⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

281897 is a deficient number, since it is larger than the sum of its proper divisors (76519).

281897 is a wasteful number, since it uses less digits than its factorization.

281897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548 (or 541 counting only the distinct ones).

The product of its digits is 8064, while the sum is 35.

The square root of 281897 is about 530.9397329264. The cubic root of 281897 is about 65.5687369623.

The spelling of 281897 in words is "two hundred eighty-one thousand, eight hundred ninety-seven".