566424021 has 4 divisors (see below), whose sum is σ = 755232032. Its totient is φ = 377616012.

The previous prime is 566424011. The next prime is 566424041. The reversal of 566424021 is 120424665.

566424021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 566424021 - 2¹⁷ = 566292949 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 566424021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (566424011) 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, 94404001 + ... + 94404006.

It is an arithmetic number, because the mean of its divisors is an integer number (188808008).

Almost surely, 2^566424021 is an apocalyptic number.

It is an amenable number.

566424021 is a deficient number, since it is larger than the sum of its proper divisors (188808011).

566424021 is a wasteful number, since it uses less digits than its factorization.

566424021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188808010.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 566424021 is about 23799.6643043552. The cubic root of 566424021 is about 827.3968965167.

Adding to 566424021 its reverse (120424665), we get a palindrome (686848686).

The spelling of 566424021 in words is "five hundred sixty-six million, four hundred twenty-four thousand, twenty-one".