166601241 has 24 divisors (see below), whose sum is σ = 255381984. Its totient is φ = 104296320.

The previous prime is 166601233. The next prime is 166601311. The reversal of 166601241 is 142106661.

It is not a de Polignac number, because 166601241 - 2³ = 166601233 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (166601231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86410 + ... + 88316.

It is an arithmetic number, because the mean of its divisors is an integer number (10640916).

Almost surely, 2^166601241 is an apocalyptic number.

It is an amenable number.

166601241 is a deficient number, since it is larger than the sum of its proper divisors (88780743).

166601241 is a wasteful number, since it uses less digits than its factorization.

166601241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2501 (or 2498 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 166601241 is about 12907.4103134595. The cubic root of 166601241 is about 550.2491884606.

The spelling of 166601241 in words is "one hundred sixty-six million, six hundred one thousand, two hundred forty-one".