198825550 has 96 divisors (see below), whose sum is σ = 472184064. Its totient is φ = 60480000.

The previous prime is 198825527. The next prime is 198825551. The reversal of 198825550 is 55528891.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a junction number, because it is equal to n+sod(n) for n = 198825497 and 198825506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198825551) 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 in 47 ways as a sum of consecutive naturals, for example, 164950 + ... + 166150.

It is an arithmetic number, because the mean of its divisors is an integer number (4918584).

Almost surely, 2^198825550 is an apocalyptic number.

198825550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198825550 is an abundant number, since it is smaller than the sum of its proper divisors (273358514).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

198825550 is a wasteful number, since it uses less digits than its factorization.

198825550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1274 (or 1269 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 43.

The square root of 198825550 is about 14100.5514076578. The cubic root of 198825550 is about 583.6565954300.

The spelling of 198825550 in words is "one hundred ninety-eight million, eight hundred twenty-five thousand, five hundred fifty".