555888 has 40 divisors (see below), whose sum is σ = 1479568. Its totient is φ = 179712.

The previous prime is 555871. The next prime is 555931. The reversal of 555888 is 888555.

555888 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×555888² = 618022937088, which contains 22 as substring.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 555888.

It is an unprimeable number.

555888 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1620 + ... + 1932.

2⁵⁵⁵⁸⁸⁸ 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 555888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (739784).

555888 is an abundant number, since it is smaller than the sum of its proper divisors (923680).

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

555888 is a wasteful number, since it uses less digits than its factorization.

555888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361 (or 355 counting only the distinct ones).

The product of its digits is 64000, while the sum is 39.

The square root of 555888 is about 745.5789696605. The cubic root of 555888 is about 82.2234634447.

The spelling of 555888 in words is "five hundred fifty-five thousand, eight hundred eighty-eight".