199556107 has 6 divisors (see below), whose sum is σ = 210612228. Its totient is φ = 189052812.

The previous prime is 199556101. The next prime is 199556111. The reversal of 199556107 is 701655991.

It is not a de Polignac number, because 199556107 - 2¹¹ = 199554059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199556101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 276033 + ... + 276754.

It is an arithmetic number, because the mean of its divisors is an integer number (35102038).

Almost surely, 2^199556107 is an apocalyptic number.

199556107 is a deficient number, since it is larger than the sum of its proper divisors (11056121).

199556107 is an equidigital number, since it uses as much as digits as its factorization.

199556107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552825 (or 552806 counting only the distinct ones).

The product of its (nonzero) digits is 85050, while the sum is 43.

The square root of 199556107 is about 14126.4329184688. The cubic root of 199556107 is about 584.3705768279.

It can be divided in two parts, 19955 and 6107, that added together give a palindrome (26062).

The spelling of 199556107 in words is "one hundred ninety-nine million, five hundred fifty-six thousand, one hundred seven".