550346400 has 432 divisors, whose sum is σ = 2132676000. Its totient is φ = 138101760.

The previous prime is 550346393. The next prime is 550346413. The reversal of 550346400 is 4643055.

It is a tau number, because it is divible by the number of its divisors (432).

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

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 3693526 + ... + 3693674.

It is an arithmetic number, because the mean of its divisors is an integer number (4936750).

Almost surely, 2^550346400 is an apocalyptic number.

550346400 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 550346400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1066338000).

550346400 is an abundant number, since it is smaller than the sum of its proper divisors (1582329600).

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

550346400 is a wasteful number, since it uses less digits than its factorization.

550346400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 550346400 is about 23459.4629094530. The cubic root of 550346400 is about 819.4932423131.

Adding to 550346400 its reverse (4643055), we get a palindrome (554989455).

The spelling of 550346400 in words is "five hundred fifty million, three hundred forty-six thousand, four hundred".