11515243 has 2 divisors, whose sum is σ = 11515244. Its totient is φ = 11515242.

The previous prime is 11515201. The next prime is 11515253. The reversal of 11515243 is 34251511.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11515243 is a prime.

It is not a weakly prime, because it can be changed into another prime (11515253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5757621 + 5757622.

It is an arithmetic number, because the mean of its divisors is an integer number (5757622).

Almost surely, 2^11515243 is an apocalyptic number.

11515243 is a deficient number, since it is larger than the sum of its proper divisors (1).

11515243 is an equidigital number, since it uses as much as digits as its factorization.

11515243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 600, while the sum is 22.

The square root of 11515243 is about 3393.4117050544. The cubic root of 11515243 is about 225.8175557877.

Adding to 11515243 its reverse (34251511), we get a palindrome (45766754).

The spelling of 11515243 in words is "eleven million, five hundred fifteen thousand, two hundred forty-three".