166501117 has 8 divisors (see below), whose sum is σ = 177781824. Its totient is φ = 155557248.

The previous prime is 166501103. The next prime is 166501133. The reversal of 166501117 is 711105661.

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

It is a cyclic number.

It is not a de Polignac number, because 166501117 - 2⁷ = 166500989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166501157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83188 + ... + 85165.

It is an arithmetic number, because the mean of its divisors is an integer number (22222728).

Almost surely, 2^166501117 is an apocalyptic number.

It is an amenable number.

166501117 is a deficient number, since it is larger than the sum of its proper divisors (11280707).

166501117 is a wasteful number, since it uses less digits than its factorization.

166501117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168419.

The product of its (nonzero) digits is 1260, while the sum is 28.

The square root of 166501117 is about 12903.5311833622. The cubic root of 166501117 is about 550.1389368007.

Adding to 166501117 its reverse (711105661), we get a palindrome (877606778).

The spelling of 166501117 in words is "one hundred sixty-six million, five hundred one thousand, one hundred seventeen".