565211055 has 16 divisors (see below), whose sum is σ = 919164384. Its totient is φ = 296503680.

The previous prime is 565211047. The next prime is 565211057. The reversal of 565211055 is 550112565.

It is not a de Polignac number, because 565211055 - 2³ = 565211047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (565211057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 307944 + ... + 309773.

It is an arithmetic number, because the mean of its divisors is an integer number (57447774).

Almost surely, 2^565211055 is an apocalyptic number.

565211055 is a deficient number, since it is larger than the sum of its proper divisors (353953329).

565211055 is a wasteful number, since it uses less digits than its factorization.

565211055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617786.

The product of its (nonzero) digits is 7500, while the sum is 30.

The square root of 565211055 is about 23774.1678087793. The cubic root of 565211055 is about 826.8058660589.

The spelling of 565211055 in words is "five hundred sixty-five million, two hundred eleven thousand, fifty-five".