2281161 has 8 divisors (see below), whose sum is σ = 3123904. Its totient is φ = 1479600.

The previous prime is 2281151. The next prime is 2281183. The reversal of 2281161 is 1611822.

2281161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2281161 - 2⁷ = 2281033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2281151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10165 + ... + 10386.

It is an arithmetic number, because the mean of its divisors is an integer number (390488).

2^2281161 is an apocalyptic number.

It is an amenable number.

2281161 is a deficient number, since it is larger than the sum of its proper divisors (842743).

2281161 is a wasteful number, since it uses less digits than its factorization.

2281161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20591.

The product of its digits is 192, while the sum is 21.

The square root of 2281161 is about 1510.3512836423. The cubic root of 2281161 is about 131.6392237488.

Adding to 2281161 its reverse (1611822), we get a palindrome (3892983).

It can be divided in two parts, 2281 and 161, that added together give a palindrome (2442).

The spelling of 2281161 in words is "two million, two hundred eighty-one thousand, one hundred sixty-one".