11530161 has 8 divisors (see below), whose sum is σ = 17081760. Its totient is φ = 7686756.

The previous prime is 11530157. The next prime is 11530177. The reversal of 11530161 is 16103511.

It is not a de Polignac number, because 11530161 - 2² = 11530157 is a prime.

It is a super-2 number, since 2×11530161² = 265889225371842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11530121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213495 + ... + 213548.

It is an arithmetic number, because the mean of its divisors is an integer number (2135220).

Almost surely, 2^11530161 is an apocalyptic number.

It is an amenable number.

11530161 is a deficient number, since it is larger than the sum of its proper divisors (5551599).

11530161 is an equidigital number, since it uses as much as digits as its factorization.

11530161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427052 (or 427046 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 11530161 is about 3395.6090764397. The cubic root of 11530161 is about 225.9150292730.

Adding to 11530161 its reverse (16103511), we get a palindrome (27633672).

It can be divided in two parts, 115 and 30161, that added together give a square (30276 = 174²).

The spelling of 11530161 in words is "eleven million, five hundred thirty thousand, one hundred sixty-one".