550540800 has 420 divisors, whose sum is σ = 2079738540. Its totient is φ = 144322560.

The previous prime is 550540777. The next prime is 550540819. The reversal of 550540800 is 8045055.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 9331171 + ... + 9331229.

Almost surely, 2^550540800 is an apocalyptic number.

550540800 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 550540800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1039869270).

550540800 is an abundant number, since it is smaller than the sum of its proper divisors (1529197740).

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

550540800 is an frugal number, since it uses more digits than its factorization.

550540800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 550540800 is about 23463.6058609925. The cubic root of 550540800 is about 819.5897213865.

Adding to 550540800 its reverse (8045055), we get a palindrome (558585855).

The spelling of 550540800 in words is "five hundred fifty million, five hundred forty thousand, eight hundred".