198271155 has 16 divisors (see below), whose sum is σ = 331027200. Its totient is φ = 101146848.

The previous prime is 198271127. The next prime is 198271159. The reversal of 198271155 is 551172891.

198271155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 198271155 - 2⁷ = 198271027 is a prime.

It is a super-2 number, since 2×198271155² = 78622901810068050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (198271159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 287005 + ... + 287694.

It is an arithmetic number, because the mean of its divisors is an integer number (20689200).

Almost surely, 2^198271155 is an apocalyptic number.

198271155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

198271155 is a deficient number, since it is larger than the sum of its proper divisors (132756045).

198271155 is a wasteful number, since it uses less digits than its factorization.

198271155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574730.

The product of its digits is 25200, while the sum is 39.

The square root of 198271155 is about 14080.8790563658. The cubic root of 198271155 is about 583.1136110351.

It can be divided in two parts, 1982 and 71155, that added together give a palindrome (73137).

The spelling of 198271155 in words is "one hundred ninety-eight million, two hundred seventy-one thousand, one hundred fifty-five".