564034021 has 4 divisors (see below), whose sum is σ = 583483500. Its totient is φ = 544584544.

The previous prime is 564034013. The next prime is 564034039. The reversal of 564034021 is 120430465.

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 263705121 + 300328900 = 16239^2 + 17330^2 .

It is a cyclic number.

It is not a de Polignac number, because 564034021 - 2³ = 564034013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564034001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9724696 + ... + 9724753.

It is an arithmetic number, because the mean of its divisors is an integer number (145870875).

Almost surely, 2^564034021 is an apocalyptic number.

It is an amenable number.

564034021 is a deficient number, since it is larger than the sum of its proper divisors (19449479).

564034021 is a wasteful number, since it uses less digits than its factorization.

564034021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19449478.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 564034021 is about 23749.4004345373. The cubic root of 564034021 is about 826.2315349145.

Adding to 564034021 its reverse (120430465), we get a palindrome (684464486).

The spelling of 564034021 in words is "five hundred sixty-four million, thirty-four thousand, twenty-one".