5550440 has 64 divisors (see below), whose sum is σ = 14636160. Its totient is φ = 1854720.

The previous prime is 5550439. The next prime is 5550443. The reversal of 5550440 is 440555.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5550443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11810 + ... + 12270.

It is an arithmetic number, because the mean of its divisors is an integer number (228690).

Almost surely, 2^5550440 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 5550440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7318080).

5550440 is an abundant number, since it is smaller than the sum of its proper divisors (9085720).

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

5550440 is a wasteful number, since it uses less digits than its factorization.

5550440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522 (or 518 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 5550440 is about 2355.9371808263. The cubic root of 5550440 is about 177.0553839473.

Adding to 5550440 its reverse (440555), we get a palindrome (5990995).

The spelling of 5550440 in words is "five million, five hundred fifty thousand, four hundred forty".