166556552 has 32 divisors (see below), whose sum is σ = 323500800. Its totient is φ = 80308800.

The previous prime is 166556549. The next prime is 166556597. The reversal of 166556552 is 255655661.

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, 81074 + ... + 83102.

It is an arithmetic number, because the mean of its divisors is an integer number (10109400).

Almost surely, 2^166556552 is an apocalyptic number.

It is an amenable number.

166556552 is a deficient number, since it is larger than the sum of its proper divisors (156944248).

166556552 is a wasteful number, since it uses less digits than its factorization.

166556552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2397 (or 2393 counting only the distinct ones).

The product of its digits is 270000, while the sum is 41.

The square root of 166556552 is about 12905.6790600108. The cubic root of 166556552 is about 550.1999845754.

The spelling of 166556552 in words is "one hundred sixty-six million, five hundred fifty-six thousand, five hundred fifty-two".