1113563 has 6 divisors (see below), whose sum is σ = 1224132. Its totient is φ = 1012220.

The previous prime is 1113557. The next prime is 1113569. The reversal of 1113563 is 3653111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1113557) and next prime (1113569).

It is not a de Polignac number, because 1113563 - 2¹⁴ = 1097179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1113569) 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, 4481 + ... + 4722.

It is an arithmetic number, because the mean of its divisors is an integer number (204022).

2^1113563 is an apocalyptic number.

1113563 is a deficient number, since it is larger than the sum of its proper divisors (110569).

1113563 is an equidigital number, since it uses as much as digits as its factorization.

1113563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9225 (or 9214 counting only the distinct ones).

The product of its digits is 270, while the sum is 20.

The square root of 1113563 is about 1055.2549454990. The cubic root of 1113563 is about 103.6505467825.

Adding to 1113563 its reverse (3653111), we get a palindrome (4766674).

The spelling of 1113563 in words is "one million, one hundred thirteen thousand, five hundred sixty-three".