2281897 has 6 divisors (see below), whose sum is σ = 2333738. Its totient is φ = 2231184.

The previous prime is 2281891. The next prime is 2281913. The reversal of 2281897 is 7981822.

It can be written as a sum of positive squares in only one way, i.e., 2262016 + 19881 = 1504^2 + 141^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2281897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2281891) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1693 + ... + 2725.

2^2281897 is an apocalyptic number.

It is an amenable number.

2281897 is a deficient number, since it is larger than the sum of its proper divisors (51841).

2281897 is an equidigital number, since it uses as much as digits as its factorization.

2281897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127 (or 1080 counting only the distinct ones).

The product of its digits is 16128, while the sum is 37.

The square root of 2281897 is about 1510.5949159189. The cubic root of 2281897 is about 131.6533797057.

The spelling of 2281897 in words is "two million, two hundred eighty-one thousand, eight hundred ninety-seven".