11815063 has 4 divisors (see below), whose sum is σ = 12723928. Its totient is φ = 10906200.

The previous prime is 11815043. The next prime is 11815073. The reversal of 11815063 is 36051811.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11815063 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 (11815033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 454413 + ... + 454438.

It is an arithmetic number, because the mean of its divisors is an integer number (3180982).

Almost surely, 2^11815063 is an apocalyptic number.

11815063 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11815063 is a deficient number, since it is larger than the sum of its proper divisors (908865).

11815063 is an equidigital number, since it uses as much as digits as its factorization.

11815063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908864.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 11815063 is about 3437.3046126289. The cubic root of 11815063 is about 227.7606431864.

Adding to 11815063 its reverse (36051811), we get a palindrome (47866874).

The spelling of 11815063 in words is "eleven million, eight hundred fifteen thousand, sixty-three".