565056 has 70 divisors (see below), whose sum is σ = 1690370. Its totient is φ = 186624.

The previous prime is 565049. The next prime is 565057. The reversal of 565056 is 650565.

565056 is a `hidden beast` number, since 5 + 650 + 5 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 518400 + 46656 = 720^2 + 216^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (565057) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5130 + ... + 5238.

2⁵⁶⁵⁰⁵⁶ 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 565056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (845185).

565056 is an abundant number, since it is smaller than the sum of its proper divisors (1125314).

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

565056 is a wasteful number, since it uses less digits than its factorization.

565056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 565056 is about 751.7020686416. The cubic root of 565056 is about 82.6730252942.

The spelling of 565056 in words is "five hundred sixty-five thousand, fifty-six".