5551728 has 160 divisors (see below), whose sum is σ = 18665472. Its totient is φ = 1382400.

The previous prime is 5551709. The next prime is 5551729. The reversal of 5551728 is 8271555.

It is a happy number.

5551728 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5551729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 135388 + ... + 135428.

Almost surely, 2^5551728 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 5551728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9332736).

5551728 is an abundant number, since it is smaller than the sum of its proper divisors (13113744).

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

5551728 is a wasteful number, since it uses less digits than its factorization.

5551728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103 (or 97 counting only the distinct ones).

The product of its digits is 14000, while the sum is 33.

The square root of 5551728 is about 2356.2105169106. The cubic root of 5551728 is about 177.0690783389.

The spelling of 5551728 in words is "five million, five hundred fifty-one thousand, seven hundred twenty-eight".