2281147 has 4 divisors (see below), whose sum is σ = 2488536. Its totient is φ = 2073760.

The previous prime is 2281127. The next prime is 2281151. The reversal of 2281147 is 7411822.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2281147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2281127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103678 + ... + 103699.

It is an arithmetic number, because the mean of its divisors is an integer number (622134).

2^2281147 is an apocalyptic number.

2281147 is a deficient number, since it is larger than the sum of its proper divisors (207389).

2281147 is a wasteful number, since it uses less digits than its factorization.

2281147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207388.

The product of its digits is 896, while the sum is 25.

The square root of 2281147 is about 1510.3466489518. The cubic root of 2281147 is about 131.6389544483.

Adding to 2281147 its reverse (7411822), we get a palindrome (9692969).

The spelling of 2281147 in words is "two million, two hundred eighty-one thousand, one hundred forty-seven".