565537361 has 4 divisors (see below), whose sum is σ = 575122800. Its totient is φ = 555951924.

The previous prime is 565537339. The next prime is 565537373. The reversal of 565537361 is 163735565.

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 a de Polignac number, because none of the positive numbers 2^k-565537361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (565537321) 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, 4792631 + ... + 4792748.

It is an arithmetic number, because the mean of its divisors is an integer number (143780700).

Almost surely, 2^565537361 is an apocalyptic number.

It is an amenable number.

565537361 is a deficient number, since it is larger than the sum of its proper divisors (9585439).

565537361 is an equidigital number, since it uses as much as digits as its factorization.

565537361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9585438.

The product of its digits is 283500, while the sum is 41.

The square root of 565537361 is about 23781.0294352452. The cubic root of 565537361 is about 826.9649451679.

The spelling of 565537361 in words is "five hundred sixty-five million, five hundred thirty-seven thousand, three hundred sixty-one".