166331241 has 6 divisors (see below), whose sum is σ = 240256250. Its totient is φ = 110887488.

The previous prime is 166331227. The next prime is 166331251. The reversal of 166331241 is 142133661.

166331241 is a `hidden beast` number, since 1 + 6 + 633 + 1 + 24 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 120362841 + 45968400 = 10971^2 + 6780^2 .

It is not a de Polignac number, because 166331241 - 2¹³ = 166323049 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (166331251) 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 5 ways as a sum of consecutive naturals, for example, 9240616 + ... + 9240633.

Almost surely, 2^166331241 is an apocalyptic number.

It is an amenable number.

166331241 is a deficient number, since it is larger than the sum of its proper divisors (73925009).

166331241 is a wasteful number, since it uses less digits than its factorization.

166331241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18481255 (or 18481252 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 166331241 is about 12896.9469643013. The cubic root of 166331241 is about 549.9517764882.

The spelling of 166331241 in words is "one hundred sixty-six million, three hundred thirty-one thousand, two hundred forty-one".