550169809 has 8 divisors (see below), whose sum is σ = 629043008. Its totient is φ = 471366000.

The previous prime is 550169801. The next prime is 550169813. The reversal of 550169809 is 908961055.

It is a happy number.

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

It is not a de Polignac number, because 550169809 - 2³ = 550169801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550169801) 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, 934 + ... + 33184.

It is an arithmetic number, because the mean of its divisors is an integer number (78630376).

Almost surely, 2^550169809 is an apocalyptic number.

It is an amenable number.

550169809 is a deficient number, since it is larger than the sum of its proper divisors (78873199).

550169809 is a wasteful number, since it uses less digits than its factorization.

550169809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34695.

The product of its (nonzero) digits is 97200, while the sum is 43.

The square root of 550169809 is about 23455.6988597654. The cubic root of 550169809 is about 819.4055820005.

The spelling of 550169809 in words is "five hundred fifty million, one hundred sixty-nine thousand, eight hundred nine".