565378361 has 4 divisors (see below), whose sum is σ = 573816912. Its totient is φ = 556939812.

The previous prime is 565378349. The next prime is 565378391. The reversal of 565378361 is 163873565.

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 not a de Polignac number, because 565378361 - 2¹⁴ = 565361977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (565378391) 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, 4219175 + ... + 4219308.

It is an arithmetic number, because the mean of its divisors is an integer number (143454228).

Almost surely, 2^565378361 is an apocalyptic number.

It is an amenable number.

565378361 is a deficient number, since it is larger than the sum of its proper divisors (8438551).

565378361 is an equidigital number, since it uses as much as digits as its factorization.

565378361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8438550.

The product of its digits is 453600, while the sum is 44.

The square root of 565378361 is about 23777.6861994602. The cubic root of 565378361 is about 826.8874379098.

The spelling of 565378361 in words is "five hundred sixty-five million, three hundred seventy-eight thousand, three hundred sixty-one".