564389537 has 4 divisors (see below), whose sum is σ = 565216560. Its totient is φ = 563562516.

The previous prime is 564389521. The next prime is 564389549. The reversal of 564389537 is 735983465.

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 a cyclic number.

It is not a de Polignac number, because 564389537 - 2⁴ = 564389521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (564389557) 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, 412487 + ... + 413852.

It is an arithmetic number, because the mean of its divisors is an integer number (141304140).

Almost surely, 2^564389537 is an apocalyptic number.

It is an amenable number.

564389537 is a deficient number, since it is larger than the sum of its proper divisors (827023).

564389537 is an equidigital number, since it uses as much as digits as its factorization.

564389537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827022.

The product of its digits is 2721600, while the sum is 50.

The square root of 564389537 is about 23756.8839918033. The cubic root of 564389537 is about 826.4050923157.

The spelling of 564389537 in words is "five hundred sixty-four million, three hundred eighty-nine thousand, five hundred thirty-seven".