6550165 has 4 divisors (see below), whose sum is σ = 7860204. Its totient is φ = 5240128.

The previous prime is 6550163. The next prime is 6550169. The reversal of 6550165 is 5610556.

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 3721041 + 2829124 = 1929^2 + 1682^2 .

It is a cyclic number.

It is not a de Polignac number, because 6550165 - 2¹ = 6550163 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 (6550163) 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, 655012 + ... + 655021.

It is an arithmetic number, because the mean of its divisors is an integer number (1965051).

Almost surely, 2^6550165 is an apocalyptic number.

It is an amenable number.

6550165 is a deficient number, since it is larger than the sum of its proper divisors (1310039).

6550165 is a wasteful number, since it uses less digits than its factorization.

6550165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1310038.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 6550165 is about 2559.3290136284. The cubic root of 6550165 is about 187.1044342161.

The spelling of 6550165 in words is "six million, five hundred fifty thousand, one hundred sixty-five".