550343400 has 48 divisors (see below), whose sum is σ = 1706066400. Its totient is φ = 146758080.

The previous prime is 550343399. The next prime is 550343407. The reversal of 550343400 is 4343055.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (550343407) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 458020 + ... + 459219.

It is an arithmetic number, because the mean of its divisors is an integer number (35543050).

Almost surely, 2^550343400 is an apocalyptic number.

550343400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

550343400 is an abundant number, since it is smaller than the sum of its proper divisors (1155723000).

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

550343400 is a wasteful number, since it uses less digits than its factorization.

550343400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917258 (or 917249 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 550343400 is about 23459.3989692831. The cubic root of 550343400 is about 819.4917532605.

Adding to 550343400 its reverse (4343055), we get a palindrome (554686455).

The spelling of 550343400 in words is "five hundred fifty million, three hundred forty-three thousand, four hundred".