555120 has 80 divisors (see below), whose sum is σ = 1919520. Its totient is φ = 147456.

The previous prime is 555119. The next prime is 555143. The reversal of 555120 is 21555.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 555093 and 555102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2032 + ... + 2288.

It is an arithmetic number, because the mean of its divisors is an integer number (23994).

2⁵⁵⁵¹²⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 555120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (959760).

555120 is an abundant number, since it is smaller than the sum of its proper divisors (1364400).

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

555120 is a wasteful number, since it uses less digits than its factorization.

555120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279 (or 267 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 18.

The square root of 555120 is about 745.0637556612. The cubic root of 555120 is about 82.1855800802.

Adding to 555120 its reverse (21555), we get a palindrome (576675).

The spelling of 555120 in words is "five hundred fifty-five thousand, one hundred twenty".