550518385 has 8 divisors (see below), whose sum is σ = 661087296. Its totient is φ = 440104560.

The previous prime is 550518383. The next prime is 550518389. The reversal of 550518385 is 583815055.

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

It is not a de Polignac number, because 550518385 - 2¹ = 550518383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550518383) 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 7 ways as a sum of consecutive naturals, for example, 30811 + ... + 45280.

It is an arithmetic number, because the mean of its divisors is an integer number (82635912).

Almost surely, 2^550518385 is an apocalyptic number.

It is an amenable number.

550518385 is a deficient number, since it is larger than the sum of its proper divisors (110568911).

550518385 is a wasteful number, since it uses less digits than its factorization.

550518385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77543.

The product of its (nonzero) digits is 120000, while the sum is 40.

The square root of 550518385 is about 23463.1282014995. The cubic root of 550518385 is about 819.5785981704.

It can be divided in two parts, 55051 and 8385, that added together give a palindrome (63436).

The spelling of 550518385 in words is "five hundred fifty million, five hundred eighteen thousand, three hundred eighty-five".