11113538 has 4 divisors (see below), whose sum is σ = 16670310. Its totient is φ = 5556768.

The previous prime is 11113513. The next prime is 11113547. The reversal of 11113538 is 83531111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83531111 = 67 ⋅1246733.

It can be written as a sum of positive squares in only one way, i.e., 8543929 + 2569609 = 2923^2 + 1603^2 .

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2778383 + ... + 2778386.

Almost surely, 2^11113538 is an apocalyptic number.

11113538 is a deficient number, since it is larger than the sum of its proper divisors (5556772).

11113538 is an equidigital number, since it uses as much as digits as its factorization.

11113538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5556771.

The product of its digits is 360, while the sum is 23.

The square root of 11113538 is about 3333.6973467908. The cubic root of 11113538 is about 223.1605619052.

Adding to 11113538 its reverse (83531111), we get a palindrome (94644649).

The spelling of 11113538 in words is "eleven million, one hundred thirteen thousand, five hundred thirty-eight".