550385812 has 24 divisors (see below), whose sum is σ = 1020637800. Its totient is φ = 258800640.

The previous prime is 550385779. The next prime is 550385813. The reversal of 550385812 is 218583055.

It can be written as a sum of positive squares in 4 ways, for example, as 119159056 + 431226756 = 10916^2 + 20766^2 .

It is a super-3 number, since 3×550385812³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550385813) 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, 116064 + ... + 120712.

It is an arithmetic number, because the mean of its divisors is an integer number (42526575).

Almost surely, 2^550385812 is an apocalyptic number.

It is an amenable number.

550385812 is a deficient number, since it is larger than the sum of its proper divisors (470251988).

550385812 is a wasteful number, since it uses less digits than its factorization.

550385812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6411 (or 6409 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 37.

The square root of 550385812 is about 23460.3028965953. The cubic root of 550385812 is about 819.5128039908.

The spelling of 550385812 in words is "five hundred fifty million, three hundred eighty-five thousand, eight hundred twelve".