55543900 has 18 divisors (see below), whose sum is σ = 120530480. Its totient is φ = 22217520.

The previous prime is 55543877. The next prime is 55543937. The reversal of 55543900 is 934555.

55543900 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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 277620 + ... + 277819.

Almost surely, 2^55543900 is an apocalyptic number.

55543900 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55543900 is an abundant number, since it is smaller than the sum of its proper divisors (64986580).

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

55543900 is a wasteful number, since it uses less digits than its factorization.

55543900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555453 (or 555446 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 55543900 is about 7452.7780055493. The cubic root of 55543900 is about 381.5447277572.

The spelling of 55543900 in words is "fifty-five million, five hundred forty-three thousand, nine hundred".