11976161 has 4 divisors (see below), whose sum is σ = 12140292. Its totient is φ = 11812032.

The previous prime is 11976131. The next prime is 11976179. The reversal of 11976161 is 16167911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16167911 = 2557 ⋅6323.

It can be written as a sum of positive squares in 2 ways, for example, as 9891025 + 2085136 = 3145^2 + 1444^2 .

It is a cyclic number.

It is not a de Polignac number, because 11976161 - 2¹⁰ = 11975137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11976121) 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, 81956 + ... + 82101.

It is an arithmetic number, because the mean of its divisors is an integer number (3035073).

Almost surely, 2^11976161 is an apocalyptic number.

It is an amenable number.

11976161 is a deficient number, since it is larger than the sum of its proper divisors (164131).

11976161 is an equidigital number, since it uses as much as digits as its factorization.

11976161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164130.

The product of its digits is 2268, while the sum is 32.

The square root of 11976161 is about 3460.6590412810. The cubic root of 11976161 is about 228.7911433256.

The spelling of 11976161 in words is "eleven million, nine hundred seventy-six thousand, one hundred sixty-one".