11516447 has 4 divisors (see below), whose sum is σ = 11534136. Its totient is φ = 11498760.

The previous prime is 11516443. The next prime is 11516473. The reversal of 11516447 is 74461511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11516447 - 2² = 11516443 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11516441) 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, 7829 + ... + 9182.

It is an arithmetic number, because the mean of its divisors is an integer number (2883534).

Almost surely, 2^11516447 is an apocalyptic number.

11516447 is a deficient number, since it is larger than the sum of its proper divisors (17689).

11516447 is an equidigital number, since it uses as much as digits as its factorization.

11516447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17688.

The product of its digits is 3360, while the sum is 29.

The square root of 11516447 is about 3393.5891029999. The cubic root of 11516447 is about 225.8254257870.

Adding to 11516447 its reverse (74461511), we get a palindrome (85977958).

The spelling of 11516447 in words is "eleven million, five hundred sixteen thousand, four hundred forty-seven".