198555245 has 16 divisors (see below), whose sum is σ = 274270080. Its totient is φ = 135169344.

The previous prime is 198555241. The next prime is 198555289. The reversal of 198555245 is 542555891.

It is a cyclic number.

It is not a de Polignac number, because 198555245 - 2² = 198555241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 198555196 and 198555205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198555241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15542 + ... + 25271.

It is an arithmetic number, because the mean of its divisors is an integer number (17141880).

Almost surely, 2^198555245 is an apocalyptic number.

It is an amenable number.

198555245 is a deficient number, since it is larger than the sum of its proper divisors (75714835).

198555245 is a wasteful number, since it uses less digits than its factorization.

198555245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40964.

The product of its digits is 360000, while the sum is 44.

The square root of 198555245 is about 14090.9632388989. The cubic root of 198555245 is about 583.3919801354.

The spelling of 198555245 in words is "one hundred ninety-eight million, five hundred fifty-five thousand, two hundred forty-five".