2161041 has 16 divisors (see below), whose sum is σ = 3133440. Its totient is φ = 1319760.

The previous prime is 2161031. The next prime is 2161087. The reversal of 2161041 is 1401612.

2161041 = 16² + 17² + ... + 186².

It is not a de Polignac number, because 2161041 - 2⁷ = 2160913 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2161041.

It is not an unprimeable number, because it can be changed into a prime (2161001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1156 + ... + 2378.

It is an arithmetic number, because the mean of its divisors is an integer number (195840).

2^2161041 is an apocalyptic number.

It is an amenable number.

2161041 is a deficient number, since it is larger than the sum of its proper divisors (972399).

2161041 is a wasteful number, since it uses less digits than its factorization.

2161041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2161041 is about 1470.0479584014. The cubic root of 2161041 is about 129.2868444233.

Adding to 2161041 its reverse (1401612), we get a palindrome (3562653).

The spelling of 2161041 in words is "two million, one hundred sixty-one thousand, forty-one".