3261161 has 4 divisors (see below), whose sum is σ = 3453012. Its totient is φ = 3069312.

The previous prime is 3261157. The next prime is 3261173. The reversal of 3261161 is 1611623.

3261161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2621161 + 640000 = 1619^2 + 800^2 .

It is a cyclic number.

It is not a de Polignac number, because 3261161 - 2² = 3261157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3261131) 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 3 ways as a sum of consecutive naturals, for example, 95900 + ... + 95933.

It is an arithmetic number, because the mean of its divisors is an integer number (863253).

Almost surely, 2^3261161 is an apocalyptic number.

It is an amenable number.

3261161 is a deficient number, since it is larger than the sum of its proper divisors (191851).

3261161 is a wasteful number, since it uses less digits than its factorization.

3261161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191850.

The product of its digits is 216, while the sum is 20.

The square root of 3261161 is about 1805.8684891210. The cubic root of 3261161 is about 148.2941708113.

Adding to 3261161 its reverse (1611623), we get a palindrome (4872784).

The spelling of 3261161 in words is "three million, two hundred sixty-one thousand, one hundred sixty-one".