226161 has 12 divisors (see below), whose sum is σ = 351988. Its totient is φ = 139104.

The previous prime is 226141. The next prime is 226169. The reversal of 226161 is 161622.

It is a happy number.

226161 is nontrivially palindromic in base 14.

It can be written as a sum of positive squares in 2 ways, for example, as 90000 + 136161 = 300^2 + 369^2 .

It is not a de Polignac number, because 226161 - 2⁵ = 226129 is a prime.

It is a super-2 number, since 2×226161² = 102297595842, which contains 22 as substring.

226161 is an undulating number in base 14.

It is not an unprimeable number, because it can be changed into a prime (226169) 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 11 ways as a sum of consecutive naturals, for example, 850 + ... + 1083.

2²²⁶¹⁶¹ is an apocalyptic number.

It is an amenable number.

226161 is a deficient number, since it is larger than the sum of its proper divisors (125827).

226161 is a wasteful number, since it uses less digits than its factorization.

226161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1952 (or 1949 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 226161 is about 475.5638758358. The cubic root of 226161 is about 60.9264544082.

Adding to 226161 its reverse (161622), we get a palindrome (387783).

The spelling of 226161 in words is "two hundred twenty-six thousand, one hundred sixty-one".