197562143 has 2 divisors, whose sum is σ = 197562144. Its totient is φ = 197562142.

The previous prime is 197562139. The next prime is 197562179. The reversal of 197562143 is 341265791.

It is a weak prime.

It is an emirp because it is prime and its reverse (341265791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 197562143 - 2² = 197562139 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 197562097 and 197562106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197567143) 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 as a sum of consecutive naturals, namely, 98781071 + 98781072.

It is an arithmetic number, because the mean of its divisors is an integer number (98781072).

Almost surely, 2^197562143 is an apocalyptic number.

197562143 is a deficient number, since it is larger than the sum of its proper divisors (1).

197562143 is an equidigital number, since it uses as much as digits as its factorization.

197562143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 38.

The square root of 197562143 is about 14055.6800973841. The cubic root of 197562143 is about 582.4177149881.

The spelling of 197562143 in words is "one hundred ninety-seven million, five hundred sixty-two thousand, one hundred forty-three".