166531106 has 12 divisors (see below), whose sum is σ = 290579958. Its totient is φ = 71370432.

The previous prime is 166531103. The next prime is 166531129. The reversal of 166531106 is 601135661.

It can be written as a sum of positive squares in only one way, i.e., 165353881 + 1177225 = 12859^2 + 1085^2 .

It is not an unprimeable number, because it can be changed into a prime (166531103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 849551 + ... + 849746.

Almost surely, 2^166531106 is an apocalyptic number.

166531106 is a deficient number, since it is larger than the sum of its proper divisors (124048852).

166531106 is a wasteful number, since it uses less digits than its factorization.

166531106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1699313 (or 1699306 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 166531106 is about 12904.6931772902. The cubic root of 166531106 is about 550.1719638588.

Adding to 166531106 its reverse (601135661), we get a palindrome (767666767).

The spelling of 166531106 in words is "one hundred sixty-six million, five hundred thirty-one thousand, one hundred six".