11516481 has 6 divisors (see below), whose sum is σ = 16634930. Its totient is φ = 7677648.

The previous prime is 11516473. The next prime is 11516513. The reversal of 11516481 is 18461511.

11516481 is a `hidden beast` number, since 1 + 15 + 1 + 648 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11451456 + 65025 = 3384^2 + 255^2 .

It is not a de Polignac number, because 11516481 - 2³ = 11516473 is a prime.

It is a super-2 number, since 2×11516481² = 265258669246722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11516441) 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 5 ways as a sum of consecutive naturals, for example, 639796 + ... + 639813.

Almost surely, 2^11516481 is an apocalyptic number.

It is an amenable number.

11516481 is a deficient number, since it is larger than the sum of its proper divisors (5118449).

11516481 is a wasteful number, since it uses less digits than its factorization.

11516481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279615 (or 1279612 counting only the distinct ones).

The product of its digits is 960, while the sum is 27.

The square root of 11516481 is about 3393.5941124419. The cubic root of 11516481 is about 225.8256480215.

Adding to 11516481 its reverse (18461511), we get a palindrome (29977992).

The spelling of 11516481 in words is "eleven million, five hundred sixteen thousand, four hundred eighty-one".