563539 has 4 divisors (see below), whose sum is σ = 565056. Its totient is φ = 562024.

The previous prime is 563503. The next prime is 563543. The reversal of 563539 is 935365.

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: 935365 = 5 ⋅187073.

It is a cyclic number.

It is not a de Polignac number, because 563539 - 2⁷ = 563411 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 563539.

It is not an unprimeable number, because it can be changed into a prime (563599) 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, 222 + ... + 1084.

It is an arithmetic number, because the mean of its divisors is an integer number (141264).

2⁵⁶³⁵³⁹ is an apocalyptic number.

563539 is a deficient number, since it is larger than the sum of its proper divisors (1517).

563539 is an equidigital number, since it uses as much as digits as its factorization.

563539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1516.

The product of its digits is 12150, while the sum is 31.

The square root of 563539 is about 750.6923471037. The cubic root of 563539 is about 82.5989751821.

The spelling of 563539 in words is "five hundred sixty-three thousand, five hundred thirty-nine".