11136481 has 8 divisors (see below), whose sum is σ = 11347560. Its totient is φ = 10927488.

The previous prime is 11136467. The next prime is 11136487. The reversal of 11136481 is 18463111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 140625 + 10995856 = 375^2 + 3316^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 11136481 - 2⁵ = 11136449 is a prime.

It is a super-2 number, since 2×11136481² = 248042418126722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11136487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13575 + ... + 14371.

It is an arithmetic number, because the mean of its divisors is an integer number (1418445).

Almost surely, 2^11136481 is an apocalyptic number.

It is an amenable number.

11136481 is a deficient number, since it is larger than the sum of its proper divisors (211079).

11136481 is an equidigital number, since it uses as much as digits as its factorization.

11136481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043.

The product of its digits is 576, while the sum is 25.

The square root of 11136481 is about 3337.1366468876. The cubic root of 11136481 is about 223.3140219930.

Adding to 11136481 its reverse (18463111), we get a palindrome (29599592).

The spelling of 11136481 in words is "eleven million, one hundred thirty-six thousand, four hundred eighty-one".