550024421400 has 72 divisors (see below), whose sum is σ = 1847165354580. Its totient is φ = 146673178560.

The previous prime is 550024421399. The next prime is 550024421407. The reversal of 550024421400 is 4124420055.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550024421407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 152782762 + ... + 152786361.

Almost surely, 2^550024421400 is an apocalyptic number.

550024421400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

550024421400 is an abundant number, since it is smaller than the sum of its proper divisors (1297140933180).

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

550024421400 is a wasteful number, since it uses less digits than its factorization.

550024421400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305569145 (or 305569133 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

Adding to 550024421400 its reverse (4124420055), we get a palindrome (554148841455).

The spelling of 550024421400 in words is "five hundred fifty billion, twenty-four million, four hundred twenty-one thousand, four hundred".