166553058 has 96 divisors (see below), whose sum is σ = 406099008. Its totient is φ = 45360000.

The previous prime is 166553039. The next prime is 166553071. The reversal of 166553058 is 850355661.

It is a super-3 number, since 3×166553058³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 663433 + ... + 663683.

It is an arithmetic number, because the mean of its divisors is an integer number (4230198).

Almost surely, 2^166553058 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166553058, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203049504).

166553058 is an abundant number, since it is smaller than the sum of its proper divisors (239545950).

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

166553058 is a wasteful number, since it uses less digits than its factorization.

166553058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368 (or 361 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 39.

The square root of 166553058 is about 12905.5436925377. The cubic root of 166553058 is about 550.1961372091.

The spelling of 166553058 in words is "one hundred sixty-six million, five hundred fifty-three thousand, fifty-eight".