130565 has 4 divisors (see below), whose sum is σ = 156684. Its totient is φ = 104448.

The previous prime is 130553. The next prime is 130579. The reversal of 130565 is 565031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 565031 = 349 ⋅1619.

It can be written as a sum of positive squares in 2 ways, for example, as 64516 + 66049 = 254^2 + 257^2 .

It is a cyclic number.

It is not a de Polignac number, because 130565 - 2¹⁶ = 65029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13052 + ... + 13061.

It is an arithmetic number, because the mean of its divisors is an integer number (39171).

2¹³⁰⁵⁶⁵ is an apocalyptic number.

It is an amenable number.

130565 is a deficient number, since it is larger than the sum of its proper divisors (26119).

130565 is an equidigital number, since it uses as much as digits as its factorization.

130565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26118.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 130565 is about 361.3377921004. The cubic root of 130565 is about 50.7312532375.

Adding to 130565 its reverse (565031), we get a palindrome (695596).

The spelling of 130565 in words is "one hundred thirty thousand, five hundred sixty-five".