199550137 has 8 divisors (see below), whose sum is σ = 201934656. Its totient is φ = 197180112.

The previous prime is 199550123. The next prime is 199550149. The reversal of 199550137 is 731055991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 199550137 - 2⁷ = 199550009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 199550137.

It is not an unprimeable number, because it can be changed into a prime (199520137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25438 + ... + 32344.

It is an arithmetic number, because the mean of its divisors is an integer number (25241832).

Almost surely, 2^199550137 is an apocalyptic number.

It is an amenable number.

199550137 is a deficient number, since it is larger than the sum of its proper divisors (2384519).

199550137 is a wasteful number, since it uses less digits than its factorization.

199550137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7247.

The product of its (nonzero) digits is 42525, while the sum is 40.

The square root of 199550137 is about 14126.2216108909. The cubic root of 199550137 is about 584.3647493488.

The spelling of 199550137 in words is "one hundred ninety-nine million, five hundred fifty thousand, one hundred thirty-seven".