550485585 has 64 divisors (see below), whose sum is σ = 1115976960. Its totient is φ = 255052800.

The previous prime is 550485583. The next prime is 550485589. The reversal of 550485585 is 585584055.

550485585 is a `hidden beast` number, since 5 + 50 + 48 + 558 + 5 = 666.

It is not a de Polignac number, because 550485585 - 2¹ = 550485583 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 550485585.

It is not an unprimeable number, because it can be changed into a prime (550485581) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20610 + ... + 39060.

It is an arithmetic number, because the mean of its divisors is an integer number (17437140).

Almost surely, 2^550485585 is an apocalyptic number.

It is an amenable number.

550485585 is an abundant number, since it is smaller than the sum of its proper divisors (565491375).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

550485585 is a wasteful number, since it uses less digits than its factorization.

550485585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18495 (or 18489 counting only the distinct ones).

The product of its (nonzero) digits is 800000, while the sum is 45.

The square root of 550485585 is about 23462.4292220563. The cubic root of 550485585 is about 819.5623209593.

The spelling of 550485585 in words is "five hundred fifty million, four hundred eighty-five thousand, five hundred eighty-five".