11541603 has 4 divisors (see below), whose sum is σ = 15388808. Its totient is φ = 7694400.

The previous prime is 11541601. The next prime is 11541611. The reversal of 11541603 is 30614511.

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

It is not a de Polignac number, because 11541603 - 2¹ = 11541601 is a prime.

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 11541603.

It is not an unprimeable number, because it can be changed into a prime (11541601) 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, 1923598 + ... + 1923603.

It is an arithmetic number, because the mean of its divisors is an integer number (3847202).

Almost surely, 2^11541603 is an apocalyptic number.

11541603 is a deficient number, since it is larger than the sum of its proper divisors (3847205).

11541603 is an equidigital number, since it uses as much as digits as its factorization.

11541603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3847204.

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

The square root of 11541603 is about 3397.2934815821. The cubic root of 11541603 is about 225.9897337859.

The spelling of 11541603 in words is "eleven million, five hundred forty-one thousand, six hundred three".