1103544563 has 6 divisors (see below), whose sum is σ = 1212987132. Its totient is φ = 1003222220.

The previous prime is 1103544557. The next prime is 1103544571. The reversal of 1103544563 is 3654453011.

It is a de Polignac number, because none of the positive numbers 2^k-1103544563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1103544503) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4559981 + ... + 4560222.

It is an arithmetic number, because the mean of its divisors is an integer number (202164522).

Almost surely, 2^1103544563 is an apocalyptic number.

1103544563 is a deficient number, since it is larger than the sum of its proper divisors (109442569).

1103544563 is an equidigital number, since it uses as much as digits as its factorization.

1103544563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9120225 (or 9120214 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 1103544563 is about 33219.6412232282. The cubic root of 1103544563 is about 1033.3877090244.

Adding to 1103544563 its reverse (3654453011), we get a palindrome (4757997574).

The spelling of 1103544563 in words is "one billion, one hundred three million, five hundred forty-four thousand, five hundred sixty-three".