565155361 has 16 divisors (see below), whose sum is σ = 634176000. Its totient is φ = 500491008.

The previous prime is 565155359. The next prime is 565155421. The reversal of 565155361 is 163551565.

It is not a de Polignac number, because 565155361 - 2¹ = 565155359 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 565155361.

It is not an unprimeable number, because it can be changed into a prime (565150361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42256 + ... + 53998.

It is an arithmetic number, because the mean of its divisors is an integer number (39636000).

Almost surely, 2^565155361 is an apocalyptic number.

It is an amenable number.

565155361 is a deficient number, since it is larger than the sum of its proper divisors (69020639).

565155361 is a wasteful number, since it uses less digits than its factorization.

565155361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11928.

The product of its digits is 67500, while the sum is 37.

The square root of 565155361 is about 23772.9964665795. The cubic root of 565155361 is about 826.7787082754.

It can be divided in two parts, 565155 and 361, that added together give a triangular number (565516 = T₁₀₆₃).

The spelling of 565155361 in words is "five hundred sixty-five million, one hundred fifty-five thousand, three hundred sixty-one".