20195201 has 8 divisors (see below), whose sum is σ = 23028264. Its totient is φ = 17544960.

The previous prime is 20195179. The next prime is 20195221. The reversal of 20195201 is 10259102.

It can be written as a sum of positive squares in 4 ways, for example, as 4946176 + 15249025 = 2224^2 + 3905^2 .

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 20195201 - 2⁶ = 20195137 is a prime.

It is a super-3 number, since 3×20195201³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20195221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45470 + ... + 45911.

It is an arithmetic number, because the mean of its divisors is an integer number (2878533).

Almost surely, 2^20195201 is an apocalyptic number.

It is an amenable number.

20195201 is a deficient number, since it is larger than the sum of its proper divisors (2833063).

20195201 is a wasteful number, since it uses less digits than its factorization.

20195201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91411.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 20195201 is about 4493.9070973931. The cubic root of 20195201 is about 272.3219991751.

The spelling of 20195201 in words is "twenty million, one hundred ninety-five thousand, two hundred one".