563911 has 4 divisors (see below), whose sum is σ = 565432. Its totient is φ = 562392.

The previous prime is 563897. The next prime is 563929. The reversal of 563911 is 119365.

563911 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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 119365 = 5 ⋅23873.

It is a cyclic number.

It is not a de Polignac number, because 563911 - 2¹⁵ = 531143 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (563971) 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, 205 + ... + 1081.

It is an arithmetic number, because the mean of its divisors is an integer number (141358).

2⁵⁶³⁹¹¹ is an apocalyptic number.

563911 is a deficient number, since it is larger than the sum of its proper divisors (1521).

563911 is an equidigital number, since it uses as much as digits as its factorization.

563911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520.

The product of its digits is 810, while the sum is 25.

The square root of 563911 is about 750.9400775029. The cubic root of 563911 is about 82.6171460985.

The spelling of 563911 in words is "five hundred sixty-three thousand, nine hundred eleven".