166445502 has 8 divisors (see below), whose sum is σ = 332891016. Its totient is φ = 55481832.

The previous prime is 166445473. The next prime is 166445519. The reversal of 166445502 is 205544661.

It is a sphenic number, since it is the product of 3 distinct primes.

166445502 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13870453 + ... + 13870464.

It is an arithmetic number, because the mean of its divisors is an integer number (41611377).

Almost surely, 2^166445502 is an apocalyptic number.

166445502 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

166445502 is a wasteful number, since it uses less digits than its factorization.

166445502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27740922.

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 166445502 is about 12901.3759731278. The cubic root of 166445502 is about 550.0776771833.

The spelling of 166445502 in words is "one hundred sixty-six million, four hundred forty-five thousand, five hundred two".