2169563 has 4 divisors (see below), whose sum is σ = 2366808. Its totient is φ = 1972320.

The previous prime is 2169539. The next prime is 2169571. The reversal of 2169563 is 3659612.

It is a happy number.

2169563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2169563 - 2⁶ = 2169499 is a prime.

It is a super-2 number, since 2×2169563² = 9414007221938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2160563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98606 + ... + 98627.

It is an arithmetic number, because the mean of its divisors is an integer number (591702).

2^2169563 is an apocalyptic number.

2169563 is a deficient number, since it is larger than the sum of its proper divisors (197245).

2169563 is a wasteful number, since it uses less digits than its factorization.

2169563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197244.

The product of its digits is 9720, while the sum is 32.

The square root of 2169563 is about 1472.9436513323. The cubic root of 2169563 is about 129.4565677759.

It can be divided in two parts, 216 and 9563, that added together give a palindrome (9779).

The spelling of 2169563 in words is "two million, one hundred sixty-nine thousand, five hundred sixty-three".