565280 has 24 divisors (see below), whose sum is σ = 1335852. Its totient is φ = 226048.

The previous prime is 565273. The next prime is 565283. The reversal of 565280 is 82565.

It can be written as a sum of positive squares in 2 ways, for example, as 559504 + 5776 = 748^2 + 76^2 .

It is not an unprimeable number, because it can be changed into a prime (565283) by changing a digit.

565280 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, 1607 + ... + 1926.

2⁵⁶⁵²⁸⁰ is an apocalyptic number.

It is an amenable number.

565280 is an abundant number, since it is smaller than the sum of its proper divisors (770572).

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

565280 is a wasteful number, since it uses less digits than its factorization.

565280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3548 (or 3540 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 565280 is about 751.8510490782. The cubic root of 565280 is about 82.6839482889.

The spelling of 565280 in words is "five hundred sixty-five thousand, two hundred eighty".