564226421 has 16 divisors (see below), whose sum is σ = 625968000. Its totient is φ = 504268800.

The previous prime is 564226387. The next prime is 564226441. The reversal of 564226421 is 124622465.

It is a cyclic number.

It is not a de Polignac number, because 564226421 - 2¹⁸ = 563964277 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 (564226441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 349865 + ... + 351473.

It is an arithmetic number, because the mean of its divisors is an integer number (39123000).

Almost surely, 2^564226421 is an apocalyptic number.

It is an amenable number.

564226421 is a deficient number, since it is larger than the sum of its proper divisors (61741579).

564226421 is a wasteful number, since it uses less digits than its factorization.

564226421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2140.

The product of its digits is 23040, while the sum is 32.

The square root of 564226421 is about 23753.4507177378. The cubic root of 564226421 is about 826.3254706639.

Adding to 564226421 its reverse (124622465), we get a palindrome (688848886).

The spelling of 564226421 in words is "five hundred sixty-four million, two hundred twenty-six thousand, four hundred twenty-one".