11516761 has 4 divisors (see below), whose sum is σ = 11523892. Its totient is φ = 11509632.

The previous prime is 11516759. The next prime is 11516789. The reversal of 11516761 is 16761511.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4756761 + 6760000 = 2181^2 + 2600^2 .

It is a cyclic number.

It is not a de Polignac number, because 11516761 - 2¹ = 11516759 is a prime.

It is a super-2 number, since 2×11516761² = 265271567862242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11516711) 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, 145 + ... + 4801.

It is an arithmetic number, because the mean of its divisors is an integer number (2880973).

Almost surely, 2^11516761 is an apocalyptic number.

It is an amenable number.

11516761 is a deficient number, since it is larger than the sum of its proper divisors (7131).

11516761 is an equidigital number, since it uses as much as digits as its factorization.

11516761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7130.

The product of its digits is 1260, while the sum is 28.

The square root of 11516761 is about 3393.6353663881. The cubic root of 11516761 is about 225.8274781717.

The spelling of 11516761 in words is "eleven million, five hundred sixteen thousand, seven hundred sixty-one".