501605166 has 8 divisors (see below), whose sum is σ = 1003210344. Its totient is φ = 167201720.

The previous prime is 501605129. The next prime is 501605227. The reversal of 501605166 is 661506105.

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

501605166 is an admirable number.

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, 41800425 + ... + 41800436.

It is an arithmetic number, because the mean of its divisors is an integer number (125401293).

Almost surely, 2^501605166 is an apocalyptic number.

501605166 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.

501605166 is a wasteful number, since it uses less digits than its factorization.

501605166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83600866.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 501605166 is about 22396.5436172638. The cubic root of 501605166 is about 794.5489661050.

The spelling of 501605166 in words is "five hundred one million, six hundred five thousand, one hundred sixty-six".