53563 has 4 divisors (see below), whose sum is σ = 55440. Its totient is φ = 51688.

The previous prime is 53551. The next prime is 53569. The reversal of 53563 is 36535.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36535 = 5 ⋅7307.

It is a cyclic number.

It is not a de Polignac number, because 53563 - 2⁹ = 53051 is a prime.

It is a Duffinian number.

53563 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (53569) 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, 895 + ... + 952.

It is an arithmetic number, because the mean of its divisors is an integer number (13860).

2⁵³⁵⁶³ is an apocalyptic number.

53563 is a deficient number, since it is larger than the sum of its proper divisors (1877).

53563 is a wasteful number, since it uses less digits than its factorization.

53563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1876.

The product of its digits is 1350, while the sum is 22.

The square root of 53563 is about 231.4368164316. The cubic root of 53563 is about 37.6953949350.

It can be divided in two parts, 53 and 563, that added together give a palindrome (616).

The spelling of 53563 in words is "fifty-three thousand, five hundred sixty-three".