16555552 has 48 divisors (see below), whose sum is σ = 37181592. Its totient is φ = 7188480.

The previous prime is 16555543. The next prime is 16555571. The reversal of 16555552 is 25555561.

16555552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 14470416 + 2085136 = 3804^2 + 1444^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5902 + ... + 8242.

Almost surely, 2^16555552 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 16555552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18590796).

16555552 is an abundant number, since it is smaller than the sum of its proper divisors (20626040).

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

16555552 is a wasteful number, since it uses less digits than its factorization.

16555552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2381 (or 2373 counting only the distinct ones).

The product of its digits is 37500, while the sum is 34.

The square root of 16555552 is about 4068.8514349875. The cubic root of 16555552 is about 254.8675564949.

Subtracting 16555552 from its reverse (25555561), we obtain a palindrome (9000009).

The spelling of 16555552 in words is "sixteen million, five hundred fifty-five thousand, five hundred fifty-two".