11288503 has 4 divisors (see below), whose sum is σ = 11447568. Its totient is φ = 11129440.

The previous prime is 11288471. The next prime is 11288509. The reversal of 11288503 is 30588211.

11288503 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30588211 = 47 ⋅650813.

It is a cyclic number.

It is not a de Polignac number, because 11288503 - 2⁵ = 11288471 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 (11288509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79426 + ... + 79567.

It is an arithmetic number, because the mean of its divisors is an integer number (2861892).

Almost surely, 2^11288503 is an apocalyptic number.

11288503 is a deficient number, since it is larger than the sum of its proper divisors (159065).

11288503 is an equidigital number, since it uses as much as digits as its factorization.

11288503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159064.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 11288503 is about 3359.8367519866. The cubic root of 11288503 is about 224.3255722213.

The spelling of 11288503 in words is "eleven million, two hundred eighty-eight thousand, five hundred three".