198501 has 8 divisors (see below), whose sum is σ = 267264. Its totient is φ = 131040.

The previous prime is 198491. The next prime is 198503. The reversal of 198501 is 105891.

198501 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.

It is not a de Polignac number, because 198501 - 2⁵ = 198469 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 198501.

It is not an unprimeable number, because it can be changed into a prime (198503) 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, 121 + ... + 641.

It is an arithmetic number, because the mean of its divisors is an integer number (33408).

2¹⁹⁸⁵⁰¹ is an apocalyptic number.

It is an amenable number.

198501 is a deficient number, since it is larger than the sum of its proper divisors (68763).

198501 is a wasteful number, since it uses less digits than its factorization.

198501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651.

The product of its (nonzero) digits is 360, while the sum is 24.

The square root of 198501 is about 445.5345104478. The cubic root of 198501 is about 58.3338848020. Note that the first 3 decimals are identical.

The spelling of 198501 in words is "one hundred ninety-eight thousand, five hundred one".