1105563 has 4 divisors (see below), whose sum is σ = 1474088. Its totient is φ = 737040.

The previous prime is 1105549. The next prime is 1105571. The reversal of 1105563 is 3655011.

It is a happy number.

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

It is not a de Polignac number, because 1105563 - 2⁴ = 1105547 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1105513) 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, 184258 + ... + 184263.

It is an arithmetic number, because the mean of its divisors is an integer number (368522).

2^1105563 is an apocalyptic number.

1105563 is a deficient number, since it is larger than the sum of its proper divisors (368525).

1105563 is an equidigital number, since it uses as much as digits as its factorization.

1105563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368524.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 1105563 is about 1051.4575597712. The cubic root of 1105563 is about 103.4017364184.

The spelling of 1105563 in words is "one million, one hundred five thousand, five hundred sixty-three".