197161273 has 4 divisors (see below), whose sum is σ = 198183028. Its totient is φ = 196139520.

The previous prime is 197161259. The next prime is 197161301. The reversal of 197161273 is 372161791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 372161791 = 83 ⋅4483877.

It can be written as a sum of positive squares in 2 ways, for example, as 43599609 + 153561664 = 6603^2 + 12392^2 .

It is a cyclic number.

It is not a de Polignac number, because 197161273 - 2⁵ = 197161241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197161243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510588 + ... + 510973.

It is an arithmetic number, because the mean of its divisors is an integer number (49545757).

Almost surely, 2^197161273 is an apocalyptic number.

It is an amenable number.

197161273 is a deficient number, since it is larger than the sum of its proper divisors (1021755).

197161273 is a wasteful number, since it uses less digits than its factorization.

197161273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021754.

The product of its digits is 15876, while the sum is 37.

The square root of 197161273 is about 14041.4127850441. The cubic root of 197161273 is about 582.0235236100.

The spelling of 197161273 in words is "one hundred ninety-seven million, one hundred sixty-one thousand, two hundred seventy-three".