555516 has 36 divisors (see below), whose sum is σ = 1513512. Its totient is φ = 170784.

The previous prime is 555491. The next prime is 555521. The reversal of 555516 is 615555.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 555516.

It is a congruent number.

It is an unprimeable number.

555516 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 11 ways as a sum of consecutive naturals, for example, 126 + ... + 1061.

It is an arithmetic number, because the mean of its divisors is an integer number (42042).

2⁵⁵⁵⁵¹⁶ 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 555516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (756756).

555516 is an abundant number, since it is smaller than the sum of its proper divisors (957996).

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

555516 is a wasteful number, since it uses less digits than its factorization.

555516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210 (or 1205 counting only the distinct ones).

The product of its digits is 3750, while the sum is 27.

The square root of 555516 is about 745.3294573543. The cubic root of 555516 is about 82.2051180503.

The spelling of 555516 in words is "five hundred fifty-five thousand, five hundred sixteen".