16666552 has 16 divisors (see below), whose sum is σ = 35714160. Its totient is φ = 7142784.

The previous prime is 16666549. The next prime is 16666577. The reversal of 16666552 is 25566661.

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, 148753 + ... + 148864.

It is an arithmetic number, because the mean of its divisors is an integer number (2232135).

Almost surely, 2^16666552 is an apocalyptic number.

It is an amenable number.

16666552 is an abundant number, since it is smaller than the sum of its proper divisors (19047608).

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

16666552 is a wasteful number, since it uses less digits than its factorization.

16666552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297630 (or 297626 counting only the distinct ones).

The product of its digits is 64800, while the sum is 37.

The square root of 16666552 is about 4082.4688608733. The cubic root of 16666552 is about 255.4358916622.

The spelling of 16666552 in words is "sixteen million, six hundred sixty-six thousand, five hundred fifty-two".