5561216 has 32 divisors (see below), whose sum is σ = 11566800. Its totient is φ = 2658304.

The previous prime is 5561209. The next prime is 5561219. The reversal of 5561216 is 6121655.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5561219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2000 + ... + 3888.

Almost surely, 2^5561216 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 5561216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5783400).

5561216 is an abundant number, since it is smaller than the sum of its proper divisors (6005584).

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

5561216 is a wasteful number, since it uses less digits than its factorization.

5561216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1926 (or 1914 counting only the distinct ones).

The product of its digits is 1800, while the sum is 26.

The square root of 5561216 is about 2358.2230598482. The cubic root of 5561216 is about 177.1698923110.

The spelling of 5561216 in words is "five million, five hundred sixty-one thousand, two hundred sixteen".