13115441 has 4 divisors (see below), whose sum is σ = 13188084. Its totient is φ = 13042800.

The previous prime is 13115437. The next prime is 13115471. The reversal of 13115441 is 14451131.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6760000 + 6355441 = 2600^2 + 2521^2 .

It is a cyclic number.

It is not a de Polignac number, because 13115441 - 2² = 13115437 is a prime.

It is a super-3 number, since 3×13115441³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13115471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36050 + ... + 36411.

It is an arithmetic number, because the mean of its divisors is an integer number (3297021).

Almost surely, 2^13115441 is an apocalyptic number.

It is an amenable number.

13115441 is a deficient number, since it is larger than the sum of its proper divisors (72643).

13115441 is an equidigital number, since it uses as much as digits as its factorization.

13115441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72642.

The product of its digits is 240, while the sum is 20.

The square root of 13115441 is about 3621.5246789163. The cubic root of 13115441 is about 235.8274197915.

Adding to 13115441 its reverse (14451131), we get a palindrome (27566572).

The spelling of 13115441 in words is "thirteen million, one hundred fifteen thousand, four hundred forty-one".