198056101 has 4 divisors (see below), whose sum is σ = 198480672. Its totient is φ = 197631532.

The previous prime is 198056093. The next prime is 198056107. The reversal of 198056101 is 101650891.

198056101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 198056101 - 2³ = 198056093 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198056107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211585 + ... + 212518.

It is an arithmetic number, because the mean of its divisors is an integer number (49620168).

Almost surely, 2^198056101 is an apocalyptic number.

It is an amenable number.

198056101 is a deficient number, since it is larger than the sum of its proper divisors (424571).

198056101 is an equidigital number, since it uses as much as digits as its factorization.

198056101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424570.

The product of its (nonzero) digits is 2160, while the sum is 31.

The square root of 198056101 is about 14073.2406005156. The cubic root of 198056101 is about 582.9027108324.

It can be divided in two parts, 1980 and 56101, that added together give a square (58081 = 241²).

The spelling of 198056101 in words is "one hundred ninety-eight million, fifty-six thousand, one hundred one".