565232491 has 4 divisors (see below), whose sum is σ = 573193584. Its totient is φ = 557271400.

The previous prime is 565232443. The next prime is 565232509. The reversal of 565232491 is 194232565.

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 565232491 - 2¹³ = 565224299 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 565232491.

It is not an unprimeable number, because it can be changed into a prime (565232401) 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, 3980440 + ... + 3980581.

It is an arithmetic number, because the mean of its divisors is an integer number (143298396).

Almost surely, 2^565232491 is an apocalyptic number.

565232491 is a deficient number, since it is larger than the sum of its proper divisors (7961093).

565232491 is an equidigital number, since it uses as much as digits as its factorization.

565232491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7961092.

The product of its digits is 64800, while the sum is 37.

The square root of 565232491 is about 23774.6186299591. The cubic root of 565232491 is about 826.8163183117.

The spelling of 565232491 in words is "five hundred sixty-five million, two hundred thirty-two thousand, four hundred ninety-one".