563008561 has 4 divisors (see below), whose sum is σ = 563284852. Its totient is φ = 562732272.

The previous prime is 563008553. The next prime is 563008681. The reversal of 563008561 is 165800365.

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

It can be written as a sum of positive squares in 2 ways, for example, as 214066161 + 348942400 = 14631^2 + 18680^2 .

It is a cyclic number.

It is not a de Polignac number, because 563008561 - 2³ = 563008553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (563008961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135066 + ... + 139171.

It is an arithmetic number, because the mean of its divisors is an integer number (140821213).

Almost surely, 2^563008561 is an apocalyptic number.

It is an amenable number.

563008561 is a deficient number, since it is larger than the sum of its proper divisors (276291).

563008561 is a wasteful number, since it uses less digits than its factorization.

563008561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276290.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 563008561 is about 23727.8014362899. The cubic root of 563008561 is about 825.7305123138.

The spelling of 563008561 in words is "five hundred sixty-three million, eight thousand, five hundred sixty-one".