166324201 has 4 divisors (see below), whose sum is σ = 173555712. Its totient is φ = 159092692.

The previous prime is 166324189. The next prime is 166324219. The reversal of 166324201 is 102423661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 102423661 = 19 ⋅5390719.

It is a cyclic number.

It is not a de Polignac number, because 166324201 - 2¹¹ = 166322153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166324241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3615721 + ... + 3615766.

It is an arithmetic number, because the mean of its divisors is an integer number (43388928).

Almost surely, 2^166324201 is an apocalyptic number.

It is an amenable number.

166324201 is a deficient number, since it is larger than the sum of its proper divisors (7231511).

166324201 is an equidigital number, since it uses as much as digits as its factorization.

166324201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7231510.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 166324201 is about 12896.6740286013. The cubic root of 166324201 is about 549.9440174424.

Adding to 166324201 its reverse (102423661), we get a palindrome (268747862).

The spelling of 166324201 in words is "one hundred sixty-six million, three hundred twenty-four thousand, two hundred one".