197172165 has 16 divisors (see below), whose sum is σ = 317131776. Its totient is φ = 104606400.

The previous prime is 197172163. The next prime is 197172187. The reversal of 197172165 is 561271791.

197172165 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 197172165 - 2¹ = 197172163 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197172163) 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, 31546 + ... + 37275.

It is an arithmetic number, because the mean of its divisors is an integer number (19820736).

Almost surely, 2^197172165 is an apocalyptic number.

197172165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

197172165 is a deficient number, since it is larger than the sum of its proper divisors (119959611).

197172165 is a wasteful number, since it uses less digits than its factorization.

197172165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69020.

The product of its digits is 26460, while the sum is 39.

The square root of 197172165 is about 14041.8006323975. The cubic root of 197172165 is about 582.0342412041.

The spelling of 197172165 in words is "one hundred ninety-seven million, one hundred seventy-two thousand, one hundred sixty-five".