550045440 has 432 divisors, whose sum is σ = 2295820800. Its totient is φ = 118775808.

The previous prime is 550045439. The next prime is 550045469. The reversal of 550045440 is 44540055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1531981 + ... + 1532339.

It is an arithmetic number, because the mean of its divisors is an integer number (5314400).

Almost surely, 2^550045440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 550045440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1147910400).

550045440 is an abundant number, since it is smaller than the sum of its proper divisors (1745775360).

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

550045440 is a wasteful number, since it uses less digits than its factorization.

550045440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412 (or 395 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 550045440 is about 23453.0475631633. The cubic root of 550045440 is about 819.3438335905.

Adding to 550045440 its reverse (44540055), we get a palindrome (594585495).

The spelling of 550045440 in words is "five hundred fifty million, forty-five thousand, four hundred forty".