197432497 has 4 divisors (see below), whose sum is σ = 197521780. Its totient is φ = 197343216.

The previous prime is 197432491. The next prime is 197432503. The reversal of 197432497 is 794234791.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (197432491) and next prime (197432503).

It can be written as a sum of positive squares in 2 ways, for example, as 27625536 + 169806961 = 5256^2 + 13031^2 .

It is a cyclic number.

It is not a de Polignac number, because 197432497 - 2²⁷ = 63214769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197432491) 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, 41238 + ... + 45775.

It is an arithmetic number, because the mean of its divisors is an integer number (49380445).

Almost surely, 2^197432497 is an apocalyptic number.

It is an amenable number.

197432497 is a deficient number, since it is larger than the sum of its proper divisors (89283).

197432497 is an equidigital number, since it uses as much as digits as its factorization.

197432497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89282.

The product of its digits is 381024, while the sum is 46.

The square root of 197432497 is about 14051.0674683456. The cubic root of 197432497 is about 582.2902873193.

The spelling of 197432497 in words is "one hundred ninety-seven million, four hundred thirty-two thousand, four hundred ninety-seven".