5551616 has 40 divisors (see below), whose sum is σ = 12685200. Its totient is φ = 2377728.

The previous prime is 5551607. The next prime is 5551627. The reversal of 5551616 is 6161555.

It is a super-2 number, since 2×5551616² = 61640880422912, which contains 22 as substring.

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, 2810 + ... + 4358.

It is an arithmetic number, because the mean of its divisors is an integer number (317130).

Almost surely, 2^5551616 is an apocalyptic number.

5551616 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5551616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6342600).

5551616 is an abundant number, since it is smaller than the sum of its proper divisors (7133584).

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

5551616 is an equidigital number, since it uses as much as digits as its factorization.

5551616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574 (or 1558 counting only the distinct ones).

The product of its digits is 4500, while the sum is 29.

The square root of 5551616 is about 2356.1867498142. The cubic root of 5551616 is about 177.0678876063.

The spelling of 5551616 in words is "five million, five hundred fifty-one thousand, six hundred sixteen".