198201 has 4 divisors (see below), whose sum is σ = 264272. Its totient is φ = 132132.
The previous prime is 198197. The next prime is 198221. The reversal of 198201 is 102891.
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: 102891 = 3 ⋅34297.
It is not a de Polignac number, because 198201 - 22 = 198197 is a prime.
It is a D-number.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (198221) 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, 33031 + ... + 33036.
It is an arithmetic number, because the mean of its divisors is an integer number (66068).
2198201 is an apocalyptic number.
It is an amenable number.
198201 is a deficient number, since it is larger than the sum of its proper divisors (66071).
198201 is an equidigital number, since it uses as much as digits as its factorization.
198201 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 66070.
The product of its (nonzero) digits is 144, while the sum is 21.
The square root of 198201 is about 445.1977088890. The cubic root of 198201 is about 58.3044827856.
The spelling of 198201 in words is "one hundred ninety-eight thousand, two hundred one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.000 sec. • engine limits •