550105565 has 4 divisors (see below), whose sum is σ = 660126684. Its totient is φ = 440084448.

The previous prime is 550105561. The next prime is 550105597. The reversal of 550105565 is 565501055.

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

It can be written as a sum of positive squares in 2 ways, for example, as 339333241 + 210772324 = 18421^2 + 14518^2 .

It is a cyclic number.

It is not a de Polignac number, because 550105565 - 2² = 550105561 is a prime.

It is a super-2 number, since 2×550105565² = 605232265287938450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550105561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55010552 + ... + 55010561.

It is an arithmetic number, because the mean of its divisors is an integer number (165031671).

Almost surely, 2^550105565 is an apocalyptic number.

It is an amenable number.

550105565 is a deficient number, since it is larger than the sum of its proper divisors (110021119).

550105565 is a wasteful number, since it uses less digits than its factorization.

550105565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110021118.

The product of its (nonzero) digits is 18750, while the sum is 32.

The square root of 550105565 is about 23454.3293444942. The cubic root of 550105565 is about 819.3736864291.

The spelling of 550105565 in words is "five hundred fifty million, one hundred five thousand, five hundred sixty-five".