564361531 has 4 divisors (see below), whose sum is σ = 564493552. Its totient is φ = 564229512.

The previous prime is 564361517. The next prime is 564361537. The reversal of 564361531 is 135163465.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 564361531 - 2¹⁹ = 563837243 is a prime.

It is a super-2 number, since 2×564361531² = 637007875345327922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (564361537) 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, 59376 + ... + 68221.

It is an arithmetic number, because the mean of its divisors is an integer number (141123388).

Almost surely, 2^564361531 is an apocalyptic number.

564361531 is a deficient number, since it is larger than the sum of its proper divisors (132021).

564361531 is a wasteful number, since it uses less digits than its factorization.

564361531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132020.

The product of its digits is 32400, while the sum is 34.

The square root of 564361531 is about 23756.2945553384. The cubic root of 564361531 is about 826.3914228655.

The spelling of 564361531 in words is "five hundred sixty-four million, three hundred sixty-one thousand, five hundred thirty-one".