197172975 has 48 divisors (see below), whose sum is σ = 345513600. Its totient is φ = 98939520.

The previous prime is 197172973. The next prime is 197173007. The reversal of 197172975 is 579271791.

It is not a de Polignac number, because 197172975 - 2¹ = 197172973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197172973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 254689 + ... + 255461.

It is an arithmetic number, because the mean of its divisors is an integer number (7198200).

Almost surely, 2^197172975 is an apocalyptic number.

197172975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

197172975 is a deficient number, since it is larger than the sum of its proper divisors (148340625).

197172975 is a wasteful number, since it uses less digits than its factorization.

197172975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984 (or 979 counting only the distinct ones).

The product of its digits is 277830, while the sum is 48.

The square root of 197172975 is about 14041.8294748227. The cubic root of 197172975 is about 582.0350382184.

The spelling of 197172975 in words is "one hundred ninety-seven million, one hundred seventy-two thousand, nine hundred seventy-five".