564536261 has 4 divisors (see below), whose sum is σ = 564644352. Its totient is φ = 564428172.

The previous prime is 564536251. The next prime is 564536263. The reversal of 564536261 is 162635465.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-564536261 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564536263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45791 + ... + 56796.

It is an arithmetic number, because the mean of its divisors is an integer number (141161088).

Almost surely, 2^564536261 is an apocalyptic number.

It is an amenable number.

564536261 is a deficient number, since it is larger than the sum of its proper divisors (108091).

564536261 is a wasteful number, since it uses less digits than its factorization.

564536261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108090.

The product of its digits is 129600, while the sum is 38.

The square root of 564536261 is about 23759.9718223739. The cubic root of 564536261 is about 826.4766994516.

The spelling of 564536261 in words is "five hundred sixty-four million, five hundred thirty-six thousand, two hundred sixty-one".