166511201 has 8 divisors (see below), whose sum is σ = 167731200. Its totient is φ = 165295872.

The previous prime is 166511161. The next prime is 166511207. The reversal of 166511201 is 102115661.

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 166511201 - 2¹⁰ = 166510177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166511207) 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 7 ways as a sum of consecutive naturals, for example, 99296 + ... + 100958.

It is an arithmetic number, because the mean of its divisors is an integer number (20966400).

Almost surely, 2^166511201 is an apocalyptic number.

It is an amenable number.

166511201 is a deficient number, since it is larger than the sum of its proper divisors (1219999).

166511201 is a wasteful number, since it uses less digits than its factorization.

166511201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2335.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 166511201 is about 12903.9219231984. The cubic root of 166511201 is about 550.1500428104.

Adding to 166511201 its reverse (102115661), we get a palindrome (268626862).

The spelling of 166511201 in words is "one hundred sixty-six million, five hundred eleven thousand, two hundred one".