565120 has 32 divisors (see below), whose sum is σ = 1352520. Its totient is φ = 225792.

The previous prime is 565111. The next prime is 565127. The reversal of 565120 is 21565.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×565120² = 638721228800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (565127) by changing a digit.

565120 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199 + ... + 1081.

2⁵⁶⁵¹²⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 565120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (676260).

565120 is an abundant number, since it is smaller than the sum of its proper divisors (787400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

565120 is an equidigital number, since it uses as much as digits as its factorization.

565120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902 (or 890 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 565120 is about 751.7446374933. The cubic root of 565120 is about 82.6761464444.

Adding to 565120 its reverse (21565), we get a palindrome (586685).

It can be divided in two parts, 5651 and 20, that added together give a triangular number (5671 = T₁₀₆).

The spelling of 565120 in words is "five hundred sixty-five thousand, one hundred twenty".