2226161 has 4 divisors (see below), whose sum is σ = 2544192. Its totient is φ = 1908132.

The previous prime is 2226151. The next prime is 2226163. The reversal of 2226161 is 1616222.

It is a happy number.

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: 1616222 = 2 ⋅808111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2226161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2226163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159005 + ... + 159018.

It is an arithmetic number, because the mean of its divisors is an integer number (636048).

2^2226161 is an apocalyptic number.

It is an amenable number.

2226161 is a deficient number, since it is larger than the sum of its proper divisors (318031).

2226161 is an equidigital number, since it uses as much as digits as its factorization.

2226161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318030.

The product of its digits is 288, while the sum is 20.

The square root of 2226161 is about 1492.0325063483. The cubic root of 2226161 is about 130.5726415007.

It can be divided in two parts, 22261 and 61, that added together give a palindrome (22322).

The spelling of 2226161 in words is "two million, two hundred twenty-six thousand, one hundred sixty-one".