550408189 has 8 divisors (see below), whose sum is σ = 566709048. Its totient is φ = 534182400.

The previous prime is 550408123. The next prime is 550408217. The reversal of 550408189 is 981804055.

It can be written as a sum of positive squares in 4 ways, for example, as 285272100 + 265136089 = 16890^2 + 16283^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 550408189 - 2¹¹ = 550406141 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 (550408889) 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, 3712 + ... + 33385.

It is an arithmetic number, because the mean of its divisors is an integer number (70838631).

Almost surely, 2^550408189 is an apocalyptic number.

It is an amenable number.

550408189 is a deficient number, since it is larger than the sum of its proper divisors (16300859).

550408189 is a wasteful number, since it uses less digits than its factorization.

550408189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37535.

The product of its (nonzero) digits is 57600, while the sum is 40.

The square root of 550408189 is about 23460.7798037491. The cubic root of 550408189 is about 819.5239101331.

The spelling of 550408189 in words is "five hundred fifty million, four hundred eight thousand, one hundred eighty-nine".