555900 has 72 divisors (see below), whose sum is σ = 1718640. Its totient is φ = 138240.

The previous prime is 555871. The next prime is 555931. The reversal of 555900 is 9555.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5046 + ... + 5154.

It is an arithmetic number, because the mean of its divisors is an integer number (23870).

2⁵⁵⁵⁹⁰⁰ is an apocalyptic number.

555900 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 555900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (859320).

555900 is an abundant number, since it is smaller than the sum of its proper divisors (1162740).

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

555900 is a wasteful number, since it uses less digits than its factorization.

555900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 1125, while the sum is 24.

The square root of 555900 is about 745.5870170543. The cubic root of 555900 is about 82.2240550954.

It can be divided in two parts, 555 and 900, that multiplied together give a triangular number (499500 = T₉₉₉).

The spelling of 555900 in words is "five hundred fifty-five thousand, nine hundred".