198522059 has 2 divisors, whose sum is σ = 198522060. Its totient is φ = 198522058.

The previous prime is 198522053. The next prime is 198522061. The reversal of 198522059 is 950225891.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198522059 is a prime.

It is a super-2 number, since 2×198522059² = 78822015819198962, which contains 22 as substring.

Together with 198522061, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (198522053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99261029 + 99261030.

It is an arithmetic number, because the mean of its divisors is an integer number (99261030).

Almost surely, 2^198522059 is an apocalyptic number.

198522059 is a deficient number, since it is larger than the sum of its proper divisors (1).

198522059 is an equidigital number, since it uses as much as digits as its factorization.

198522059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 41.

The square root of 198522059 is about 14089.7856264742. The cubic root of 198522059 is about 583.3594761254.

The spelling of 198522059 in words is "one hundred ninety-eight million, five hundred twenty-two thousand, fifty-nine".