43197073 has 2 divisors, whose sum is σ = 43197074. Its totient is φ = 43197072.

The previous prime is 43197071. The next prime is 43197097. The reversal of 43197073 is 37079134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37847104 + 5349969 = 6152^2 + 2313^2 .

It is a cyclic number.

It is not a de Polignac number, because 43197073 - 2¹ = 43197071 is a prime.

Together with 43197071, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (43197071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21598536 + 21598537.

It is an arithmetic number, because the mean of its divisors is an integer number (21598537).

Almost surely, 2^43197073 is an apocalyptic number.

It is an amenable number.

43197073 is a deficient number, since it is larger than the sum of its proper divisors (1).

43197073 is an equidigital number, since it uses as much as digits as its factorization.

43197073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15876, while the sum is 34.

The square root of 43197073 is about 6572.4480218561. The cubic root of 43197073 is about 350.8742037770.

The spelling of 43197073 in words is "forty-three million, one hundred ninety-seven thousand, seventy-three".