6550189 has 4 divisors (see below), whose sum is σ = 6594300. Its totient is φ = 6506080.

The previous prime is 6550183. The next prime is 6550199. The reversal of 6550189 is 9810556.

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 3034564 + 3515625 = 1742^2 + 1875^2 .

It is a cyclic number.

It is not a de Polignac number, because 6550189 - 2⁵ = 6550157 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 (6550183) 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, 21832 + ... + 22129.

It is an arithmetic number, because the mean of its divisors is an integer number (1648575).

Almost surely, 2^6550189 is an apocalyptic number.

It is an amenable number.

6550189 is a deficient number, since it is larger than the sum of its proper divisors (44111).

6550189 is a wasteful number, since it uses less digits than its factorization.

6550189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44110.

The product of its (nonzero) digits is 10800, while the sum is 34.

The square root of 6550189 is about 2559.3337023530. Note that the first 3 decimals coincide. The cubic root of 6550189 is about 187.1046627346.

The spelling of 6550189 in words is "six million, five hundred fifty thousand, one hundred eighty-nine".