198533 has 2 divisors, whose sum is σ = 198534. Its totient is φ = 198532.

The previous prime is 198529. The next prime is 198553. The reversal of 198533 is 335891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178084 + 20449 = 422^2 + 143^2 .

It is a cyclic number.

It is not a de Polignac number, because 198533 - 2² = 198529 is a prime.

It is equal to p₁₇₈₆₇ and since 198533 and 17867 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 198496 and 198505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99266 + 99267.

It is an arithmetic number, because the mean of its divisors is an integer number (99267).

2¹⁹⁸⁵³³ is an apocalyptic number.

It is an amenable number.

198533 is a deficient number, since it is larger than the sum of its proper divisors (1).

198533 is an equidigital number, since it uses as much as digits as its factorization.

198533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 29.

The square root of 198533 is about 445.5704209213. The cubic root of 198533 is about 58.3370192682.

The spelling of 198533 in words is "one hundred ninety-eight thousand, five hundred thirty-three".