199055555 has 8 divisors (see below), whose sum is σ = 239162544. Its totient is φ = 159047200.

The previous prime is 199055551. The next prime is 199055581. The reversal of 199055555 is 555550991.

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

It is not a de Polignac number, because 199055555 - 2² = 199055551 is a prime.

It is a super-2 number, since 2×199055555² = 79246227952716050, which contains 22 as substring.

It is a Duffinian number.

199055555 is a modest number, since divided by 55555 gives 1990 as remainder.

It is not an unprimeable number, because it can be changed into a prime (199055551) 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, 20141 + ... + 28350.

It is an arithmetic number, because the mean of its divisors is an integer number (29895318).

Almost surely, 2^199055555 is an apocalyptic number.

199055555 is a deficient number, since it is larger than the sum of its proper divisors (40106989).

199055555 is an equidigital number, since it uses as much as digits as its factorization.

199055555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49317.

The product of its (nonzero) digits is 253125, while the sum is 44.

The square root of 199055555 is about 14108.7049370238. The cubic root of 199055555 is about 583.8815702102.

The spelling of 199055555 in words is "one hundred ninety-nine million, fifty-five thousand, five hundred fifty-five".