2229281 has 4 divisors (see below), whose sum is σ = 2233392. Its totient is φ = 2225172.

The previous prime is 2229277. The next prime is 2229299. The reversal of 2229281 is 1829222.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1829222 = 2 ⋅914611.

It is a cyclic number.

It is not a de Polignac number, because 2229281 - 2² = 2229277 is a prime.

It is a super-2 number, since 2×2229281² = 9939387553922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2229281.

It is not an unprimeable number, because it can be changed into a prime (2229581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1091 + ... + 2376.

It is an arithmetic number, because the mean of its divisors is an integer number (558348).

2^2229281 is an apocalyptic number.

It is an amenable number.

2229281 is a deficient number, since it is larger than the sum of its proper divisors (4111).

2229281 is an equidigital number, since it uses as much as digits as its factorization.

2229281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4110.

The product of its digits is 1152, while the sum is 26.

The square root of 2229281 is about 1493.0776938927. The cubic root of 2229281 is about 130.6336129025.

The spelling of 2229281 in words is "two million, two hundred twenty-nine thousand, two hundred eighty-one".