564427521 has 96 divisors (see below), whose sum is σ = 1032019200. Its totient is φ = 307159776.

The previous prime is 564427519. The next prime is 564427583. The reversal of 564427521 is 125724465.

It is a happy number.

564427521 is a `hidden beast` number, since 5 + 644 + 2 + 7 + 5 + 2 + 1 = 666.

It is not a de Polignac number, because 564427521 - 2¹ = 564427519 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (564427511) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2464635 + ... + 2464863.

It is an arithmetic number, because the mean of its divisors is an integer number (10750200).

Almost surely, 2^564427521 is an apocalyptic number.

It is an amenable number.

564427521 is a deficient number, since it is larger than the sum of its proper divisors (467591679).

564427521 is an equidigital number, since it uses as much as digits as its factorization.

564427521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287 (or 262 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 564427521 is about 23757.6834097940. The cubic root of 564427521 is about 826.4236312058.

The spelling of 564427521 in words is "five hundred sixty-four million, four hundred twenty-seven thousand, five hundred twenty-one".