565055 has 4 divisors (see below), whose sum is σ = 678072. Its totient is φ = 452040.

The previous prime is 565049. The next prime is 565057. The reversal of 565055 is 550565.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 565055 - 2⁴ = 565039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 565055.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56501 + ... + 56510.

It is an arithmetic number, because the mean of its divisors is an integer number (169518).

2⁵⁶⁵⁰⁵⁵ is an apocalyptic number.

565055 is a deficient number, since it is larger than the sum of its proper divisors (113017).

565055 is a wasteful number, since it uses less digits than its factorization.

565055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113016.

The product of its (nonzero) digits is 3750, while the sum is 26.

The square root of 565055 is about 751.7014034841. The cubic root of 565055 is about 82.6729765244.

The spelling of 565055 in words is "five hundred sixty-five thousand, fifty-five".