565506493 has 4 divisors (see below), whose sum is σ = 567082080. Its totient is φ = 563930908.

The previous prime is 565506457. The next prime is 565506499. The reversal of 565506493 is 394605565.

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, and also an emirpimes, since its reverse is a distinct semiprime: 394605565 = 5 ⋅78921113.

It is a cyclic number.

It is not a de Polignac number, because 565506493 - 2¹³ = 565498301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (565506499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 787255 + ... + 787972.

It is an arithmetic number, because the mean of its divisors is an integer number (141770520).

Almost surely, 2^565506493 is an apocalyptic number.

It is an amenable number.

565506493 is a deficient number, since it is larger than the sum of its proper divisors (1575587).

565506493 is a wasteful number, since it uses less digits than its factorization.

565506493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575586.

The product of its (nonzero) digits is 486000, while the sum is 43.

The square root of 565506493 is about 23780.3804216838. The cubic root of 565506493 is about 826.9498991721.

The spelling of 565506493 in words is "five hundred sixty-five million, five hundred six thousand, four hundred ninety-three".