11541161 has 4 divisors (see below), whose sum is σ = 11548032. Its totient is φ = 11534292.

The previous prime is 11541149. The next prime is 11541191. The reversal of 11541161 is 16114511.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11541161 - 2⁶ = 11541097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11541191) 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, 956 + ... + 4898.

It is an arithmetic number, because the mean of its divisors is an integer number (2887008).

Almost surely, 2^11541161 is an apocalyptic number.

It is an amenable number.

11541161 is a deficient number, since it is larger than the sum of its proper divisors (6871).

11541161 is an equidigital number, since it uses as much as digits as its factorization.

11541161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6870.

The product of its digits is 120, while the sum is 20.

The square root of 11541161 is about 3397.2284291758. The cubic root of 11541161 is about 225.9868488967.

Adding to 11541161 its reverse (16114511), we get a palindrome (27655672).

The spelling of 11541161 in words is "eleven million, five hundred forty-one thousand, one hundred sixty-one".