555066 has 32 divisors (see below), whose sum is σ = 1300800. Its totient is φ = 174960.

The previous prime is 555053. The next prime is 555073. The reversal of 555066 is 660555.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon 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, 756 + ... + 1296.

It is an arithmetic number, because the mean of its divisors is an integer number (40650).

2⁵⁵⁵⁰⁶⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 555066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (650400).

555066 is an abundant number, since it is smaller than the sum of its proper divisors (745734).

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

555066 is a wasteful number, since it uses less digits than its factorization.

555066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571 (or 565 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 555066 is about 745.0275162704. The cubic root of 555066 is about 82.1829150917.

The spelling of 555066 in words is "five hundred fifty-five thousand, sixty-six".