199550500 has 24 divisors (see below), whose sum is σ = 435819384. Its totient is φ = 79820000.

The previous prime is 199550467. The next prime is 199550543. The reversal of 199550500 is 5055991.

199550500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 401956 + 199148544 = 634^2 + 14112^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199051 + ... + 200050.

It is an arithmetic number, because the mean of its divisors is an integer number (18159141).

Almost surely, 2^199550500 is an apocalyptic number.

199550500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199550500 is an abundant number, since it is smaller than the sum of its proper divisors (236268884).

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

199550500 is a wasteful number, since it uses less digits than its factorization.

199550500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399120 (or 399108 counting only the distinct ones).

The product of its (nonzero) digits is 10125, while the sum is 34.

The square root of 199550500 is about 14126.2344593313. The cubic root of 199550500 is about 584.3651036863.

The spelling of 199550500 in words is "one hundred ninety-nine million, five hundred fifty thousand, five hundred".