55565506165 has 8 divisors (see below), whose sum is σ = 71807731128. Its totient is φ = 41032989120.

The previous prime is 55565506163. The next prime is 55565506201. The reversal of 55565506165 is 56160556555.

It can be written as a sum of positive squares in 4 ways, for example, as 12581435889 + 42984070276 = 112167^2 + 207326^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55565506165 - 2¹ = 55565506163 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55565506163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 427426906 + ... + 427427035.

It is an arithmetic number, because the mean of its divisors is an integer number (8975966391).

Almost surely, 2^55565506165 is an apocalyptic number.

It is an amenable number.

55565506165 is a deficient number, since it is larger than the sum of its proper divisors (16242224963).

55565506165 is a wasteful number, since it uses less digits than its factorization.

55565506165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854853959.

The product of its (nonzero) digits is 3375000, while the sum is 49.

The spelling of 55565506165 in words is "fifty-five billion, five hundred sixty-five million, five hundred six thousand, one hundred sixty-five".