201572166 has 8 divisors (see below), whose sum is σ = 403144344. Its totient is φ = 67190720.

The previous prime is 201572149. The next prime is 201572167. The reversal of 201572166 is 661275102.

201572166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

201572166 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201572167) 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, 16797675 + ... + 16797686.

It is an arithmetic number, because the mean of its divisors is an integer number (50393043).

Almost surely, 2^201572166 is an apocalyptic number.

201572166 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201572166 is a wasteful number, since it uses less digits than its factorization.

201572166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33595366.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 201572166 is about 14197.6112779580. The cubic root of 201572166 is about 586.3318970031.

The spelling of 201572166 in words is "two hundred one million, five hundred seventy-two thousand, one hundred sixty-six".