11530261 has 4 divisors (see below), whose sum is σ = 11644524. Its totient is φ = 11416000.

The previous prime is 11530249. The next prime is 11530271. The reversal of 11530261 is 16203511.

11530261 is digitally balanced in base 3, 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 10929636 + 600625 = 3306^2 + 775^2 .

It is a cyclic number.

It is not a de Polignac number, because 11530261 - 2⁵ = 11530229 is a prime.

It is a Duffinian number.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11530201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56980 + ... + 57181.

It is an arithmetic number, because the mean of its divisors is an integer number (2911131).

Almost surely, 2^11530261 is an apocalyptic number.

It is an amenable number.

11530261 is a deficient number, since it is larger than the sum of its proper divisors (114263).

11530261 is a wasteful number, since it uses less digits than its factorization.

11530261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114262.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 11530261 is about 3395.6238013066. The cubic root of 11530261 is about 225.9156823843.

Adding to 11530261 its reverse (16203511), we get a palindrome (27733772).

The spelling of 11530261 in words is "eleven million, five hundred thirty thousand, two hundred sixty-one".