563121365 has 4 divisors (see below), whose sum is σ = 675745644. Its totient is φ = 450497088.

The previous prime is 563121329. The next prime is 563121371.

563121365 is nontrivially palindromic in base 10.

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 84474481 + 478646884 = 9191^2 + 21878^2 .

It is a cyclic number.

It is not a de Polignac number, because 563121365 - 2¹⁴ = 563104981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56312132 + ... + 56312141.

It is an arithmetic number, because the mean of its divisors is an integer number (168936411).

Almost surely, 2^563121365 is an apocalyptic number.

It is an amenable number.

563121365 is a deficient number, since it is larger than the sum of its proper divisors (112624279).

563121365 is a wasteful number, since it uses less digits than its factorization.

563121365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112624278.

The product of its digits is 16200, while the sum is 32.

The square root of 563121365 is about 23730.1783600545. The cubic root of 563121365 is about 825.7856562263.

The spelling of 563121365 in words is "five hundred sixty-three million, one hundred twenty-one thousand, three hundred sixty-five".