564330521 has 4 divisors (see below), whose sum is σ = 597526452. Its totient is φ = 531134592.

The previous prime is 564330493. The next prime is 564330523. The reversal of 564330521 is 125033465.

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 205606921 + 358723600 = 14339^2 + 18940^2 .

It is a cyclic number.

It is not a de Polignac number, because 564330521 - 2¹⁰ = 564329497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (564330523) 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, 16597940 + ... + 16597973.

It is an arithmetic number, because the mean of its divisors is an integer number (149381613).

Almost surely, 2^564330521 is an apocalyptic number.

It is an amenable number.

564330521 is a deficient number, since it is larger than the sum of its proper divisors (33195931).

564330521 is a wasteful number, since it uses less digits than its factorization.

564330521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33195930.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 564330521 is about 23755.6418772468. The cubic root of 564330521 is about 826.3762866653.

Adding to 564330521 its reverse (125033465), we get a palindrome (689363986).

The spelling of 564330521 in words is "five hundred sixty-four million, three hundred thirty thousand, five hundred twenty-one".