563501 has 2 divisors, whose sum is σ = 563502. Its totient is φ = 563500.

The previous prime is 563489. The next prime is 563503. The reversal of 563501 is 105365.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 561001 + 2500 = 749^2 + 50^2 .

It is a cyclic number.

It is not a de Polignac number, because 563501 - 2¹⁰ = 562477 is a prime.

Together with 563503, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (563503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 281750 + 281751.

It is an arithmetic number, because the mean of its divisors is an integer number (281751).

2⁵⁶³⁵⁰¹ is an apocalyptic number.

It is an amenable number.

563501 is a deficient number, since it is larger than the sum of its proper divisors (1).

563501 is an equidigital number, since it uses as much as digits as its factorization.

563501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 563501 is about 750.6670367080. The cubic root of 563501 is about 82.5971185631.

Adding to 563501 its reverse (105365), we get a palindrome (668866).

The spelling of 563501 in words is "five hundred sixty-three thousand, five hundred one".