553221400 has 48 divisors (see below), whose sum is σ = 1330606800. Its totient is φ = 213655680.

The previous prime is 553221391. The next prime is 553221451. The reversal of 553221400 is 4122355.

553221400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41892 + ... + 53491.

It is an arithmetic number, because the mean of its divisors is an integer number (27720975).

Almost surely, 2^553221400 is an apocalyptic number.

553221400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

553221400 is an abundant number, since it is smaller than the sum of its proper divisors (777385400).

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

553221400 is a wasteful number, since it uses less digits than its factorization.

553221400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95428 (or 95419 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 553221400 is about 23520.6590043732. The cubic root of 553221400 is about 820.9177707521.

Adding to 553221400 its reverse (4122355), we get a palindrome (557343755).

The spelling of 553221400 in words is "five hundred fifty-three million, two hundred twenty-one thousand, four hundred".