555216 has 40 divisors (see below), whose sum is σ = 1473120. Its totient is φ = 180096.

The previous prime is 555209. The next prime is 555221. The reversal of 555216 is 612555.

It is a Harshad number since it is a multiple of its sum of digits (24).

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 555216.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1930 + ... + 2198.

It is an arithmetic number, because the mean of its divisors is an integer number (36828).

2⁵⁵⁵²¹⁶ 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 555216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (736560).

555216 is an abundant number, since it is smaller than the sum of its proper divisors (917904).

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

555216 is a wasteful number, since it uses less digits than its factorization.

555216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323 (or 317 counting only the distinct ones).

The product of its digits is 1500, while the sum is 24.

The square root of 555216 is about 745.1281768931. The cubic root of 555216 is about 82.1903174108.

The spelling of 555216 in words is "five hundred fifty-five thousand, two hundred sixteen".