11811265 has 8 divisors (see below), whose sum is σ = 14662440. Its totient is φ = 9123072.

The previous prime is 11811253. The next prime is 11811271. The reversal of 11811265 is 56211811.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 258064 + 11553201 = 508^2 + 3399^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11811265 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 40584 + ... + 40873.

It is an arithmetic number, because the mean of its divisors is an integer number (1832805).

Almost surely, 2^11811265 is an apocalyptic number.

It is an amenable number.

11811265 is a deficient number, since it is larger than the sum of its proper divisors (2851175).

11811265 is an equidigital number, since it uses as much as digits as its factorization.

11811265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81491.

The product of its digits is 480, while the sum is 25.

The square root of 11811265 is about 3436.7521004576. The cubic root of 11811265 is about 227.7362357095.

The spelling of 11811265 in words is "eleven million, eight hundred eleven thousand, two hundred sixty-five".