198528101 has 4 divisors (see below), whose sum is σ = 198573804. Its totient is φ = 198482400.

The previous prime is 198528079. The next prime is 198528137. The reversal of 198528101 is 101825891.

It is a Cunningham number, because it is equal to 14090²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 182520100 + 16008001 = 13510^2 + 4001^2 .

It is a cyclic number.

It is not a de Polignac number, because 198528101 - 2¹⁴ = 198511717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198528401) 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, 15560 + ... + 25281.

It is an arithmetic number, because the mean of its divisors is an integer number (49643451).

Almost surely, 2^198528101 is an apocalyptic number.

It is an amenable number.

198528101 is a deficient number, since it is larger than the sum of its proper divisors (45703).

198528101 is an equidigital number, since it uses as much as digits as its factorization.

198528101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45702.

The product of its (nonzero) digits is 5760, while the sum is 35.

The square root of 198528101 is about 14090.0000354862. Note that the first 4 decimals coincide. The cubic root of 198528101 is about 583.3653942288.

The spelling of 198528101 in words is "one hundred ninety-eight million, five hundred twenty-eight thousand, one hundred one".