11577161 has 4 divisors (see below), whose sum is σ = 11795652. Its totient is φ = 11358672.

The previous prime is 11577149. The next prime is 11577169. The reversal of 11577161 is 16177511.

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 8737936 + 2839225 = 2956^2 + 1685^2 .

It is a cyclic number.

It is not a de Polignac number, because 11577161 - 2¹⁴ = 11560777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11577169) 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, 109166 + ... + 109271.

It is an arithmetic number, because the mean of its divisors is an integer number (2948913).

Almost surely, 2^11577161 is an apocalyptic number.

It is an amenable number.

11577161 is a deficient number, since it is larger than the sum of its proper divisors (218491).

11577161 is an equidigital number, since it uses as much as digits as its factorization.

11577161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218490.

The product of its digits is 1470, while the sum is 29.

The square root of 11577161 is about 3402.5227405559. The cubic root of 11577161 is about 226.2215763567.

The spelling of 11577161 in words is "eleven million, five hundred seventy-seven thousand, one hundred sixty-one".