197445 has 8 divisors (see below), whose sum is σ = 315936. Its totient is φ = 105296.

The previous prime is 197441. The next prime is 197453. The reversal of 197445 is 544791.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 197445 - 2² = 197441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6567 + ... + 6596.

It is an arithmetic number, because the mean of its divisors is an integer number (39492).

2¹⁹⁷⁴⁴⁵ is an apocalyptic number.

197445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

197445 is a deficient number, since it is larger than the sum of its proper divisors (118491).

197445 is a wasteful number, since it uses less digits than its factorization.

197445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13171.

The product of its digits is 5040, while the sum is 30.

The square root of 197445 is about 444.3478367225. The cubic root of 197445 is about 58.2302578815.

The spelling of 197445 in words is "one hundred ninety-seven thousand, four hundred forty-five".