555616 has 24 divisors (see below), whose sum is σ = 1111320. Its totient is φ = 273408.

The previous prime is 555593. The next prime is 555637. The reversal of 555616 is 616555.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3015 + ... + 3193.

It is an arithmetic number, because the mean of its divisors is an integer number (46305).

2⁵⁵⁵⁶¹⁶ is an apocalyptic number.

It is an amenable number.

555616 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a weird number, because it is abundant, but not a pseudoperfect number.

555616 is a wasteful number, since it uses less digits than its factorization.

555616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286 (or 278 counting only the distinct ones).

The product of its digits is 4500, while the sum is 28.

The square root of 555616 is about 745.3965387631. The cubic root of 555616 is about 82.2100504126.

It can be divided in two parts, 55 and 5616, that added together give a triangular number (5671 = T₁₀₆).

The spelling of 555616 in words is "five hundred fifty-five thousand, six hundred sixteen".