166453201 has 4 divisors (see below), whose sum is σ = 169182004. Its totient is φ = 163724400.

The previous prime is 166453187. The next prime is 166453241. The reversal of 166453201 is 102354661.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 90345025 + 76108176 = 9505^2 + 8724^2 .

It is a cyclic number.

It is not a de Polignac number, because 166453201 - 2⁵ = 166453169 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166453201.

It is not an unprimeable number, because it can be changed into a prime (166453241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1364310 + ... + 1364431.

It is an arithmetic number, because the mean of its divisors is an integer number (42295501).

Almost surely, 2^166453201 is an apocalyptic number.

It is an amenable number.

166453201 is a deficient number, since it is larger than the sum of its proper divisors (2728803).

166453201 is an equidigital number, since it uses as much as digits as its factorization.

166453201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2728802.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 166453201 is about 12901.6743487037. The cubic root of 166453201 is about 550.0861584033.

The spelling of 166453201 in words is "one hundred sixty-six million, four hundred fifty-three thousand, two hundred one".