2262161 has 4 divisors (see below), whose sum is σ = 2467824. Its totient is φ = 2056500.

The previous prime is 2262149. The next prime is 2262191. The reversal of 2262161 is 1612622.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2262161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2262191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102815 + ... + 102836.

It is an arithmetic number, because the mean of its divisors is an integer number (616956).

2^2262161 is an apocalyptic number.

It is an amenable number.

2262161 is a deficient number, since it is larger than the sum of its proper divisors (205663).

2262161 is a wasteful number, since it uses less digits than its factorization.

2262161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205662.

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

The square root of 2262161 is about 1504.0482040148. The cubic root of 2262161 is about 131.2727259212.

Adding to 2262161 its reverse (1612622), we get a palindrome (3874783).

The spelling of 2262161 in words is "two million, two hundred sixty-two thousand, one hundred sixty-one".