565011773 has 4 divisors (see below), whose sum is σ = 565061568. Its totient is φ = 564961980.

The previous prime is 565011763. The next prime is 565011809. The reversal of 565011773 is 377110565.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 565011773 - 2⁶ = 565011709 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 (565011743) 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, 1340 + ... + 33642.

It is an arithmetic number, because the mean of its divisors is an integer number (141265392).

Almost surely, 2^565011773 is an apocalyptic number.

It is an amenable number.

565011773 is a deficient number, since it is larger than the sum of its proper divisors (49795).

565011773 is a wasteful number, since it uses less digits than its factorization.

565011773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49794.

The product of its (nonzero) digits is 22050, while the sum is 35.

The square root of 565011773 is about 23769.9762936356. The cubic root of 565011773 is about 826.7086829545.

The spelling of 565011773 in words is "five hundred sixty-five million, eleven thousand, seven hundred seventy-three".