501566166 has 24 divisors (see below), whose sum is σ = 1087883784. Its totient is φ = 167010720.

The previous prime is 501566111. The next prime is 501566203. The reversal of 501566166 is 661665105.

It is a self number, because there is not a number n which added to its sum of digits gives 501566166.

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 11 ways as a sum of consecutive naturals, for example, 3130 + ... + 31826.

It is an arithmetic number, because the mean of its divisors is an integer number (45328491).

Almost surely, 2^501566166 is an apocalyptic number.

501566166 is an abundant number, since it is smaller than the sum of its proper divisors (586317618).

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

501566166 is a wasteful number, since it uses less digits than its factorization.

501566166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29676 (or 29673 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 501566166 is about 22395.6729302783. The cubic root of 501566166 is about 794.5283734058.

The spelling of 501566166 in words is "five hundred one million, five hundred sixty-six thousand, one hundred sixty-six".