2043161 has 4 divisors (see below), whose sum is σ = 2058000. Its totient is φ = 2028324.

The previous prime is 2043149. The next prime is 2043163. The reversal of 2043161 is 1613402.

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-2043161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2043163) 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, 7211 + ... + 7488.

It is an arithmetic number, because the mean of its divisors is an integer number (514500).

2^2043161 is an apocalyptic number.

It is an amenable number.

2043161 is a deficient number, since it is larger than the sum of its proper divisors (14839).

2043161 is a wasteful number, since it uses less digits than its factorization.

2043161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14838.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2043161 is about 1429.3918287160. The cubic root of 2043161 is about 126.8919866116.

Adding to 2043161 its reverse (1613402), we get a palindrome (3656563).

The spelling of 2043161 in words is "two million, forty-three thousand, one hundred sixty-one".