11145603 has 8 divisors (see below), whose sum is σ = 16983808. Its totient is φ = 6368904.

The previous prime is 11145583. The next prime is 11145619. The reversal of 11145603 is 30654111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11145603 - 2⁶ = 11145539 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 530743 = 11145603 / (1 + 1 + 1 + 4 + 5 + 6 + 0 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11145603.

It is not an unprimeable number, because it can be changed into a prime (11145623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265351 + ... + 265392.

It is an arithmetic number, because the mean of its divisors is an integer number (2122976).

Almost surely, 2^11145603 is an apocalyptic number.

11145603 is a deficient number, since it is larger than the sum of its proper divisors (5838205).

11145603 is an equidigital number, since it uses as much as digits as its factorization.

11145603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530753.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 11145603 is about 3338.5031076816. The cubic root of 11145603 is about 223.3749782492.

Adding to 11145603 its reverse (30654111), we get a palindrome (41799714).

The spelling of 11145603 in words is "eleven million, one hundred forty-five thousand, six hundred three".