198575101 has 2 divisors, whose sum is σ = 198575102. Its totient is φ = 198575100.

The previous prime is 198575087. The next prime is 198575149. The reversal of 198575101 is 101575891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109725625 + 88849476 = 10475^2 + 9426^2 .

It is a cyclic number.

It is not a de Polignac number, because 198575101 - 2⁷ = 198574973 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198575401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99287550 + 99287551.

It is an arithmetic number, because the mean of its divisors is an integer number (99287551).

Almost surely, 2^198575101 is an apocalyptic number.

It is an amenable number.

198575101 is a deficient number, since it is larger than the sum of its proper divisors (1).

198575101 is an equidigital number, since it uses as much as digits as its factorization.

198575101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 37.

The square root of 198575101 is about 14091.6677863197. The cubic root of 198575101 is about 583.4114263522.

The spelling of 198575101 in words is "one hundred ninety-eight million, five hundred seventy-five thousand, one hundred one".