72195197 has 2 divisors, whose sum is σ = 72195198. Its totient is φ = 72195196.

The previous prime is 72195191. The next prime is 72195203. The reversal of 72195197 is 79159127.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (72195191) and next prime (72195203).

It can be written as a sum of positive squares in only one way, i.e., 64416676 + 7778521 = 8026^2 + 2789^2 .

It is an emirp because it is prime and its reverse (79159127) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72195197 - 2¹² = 72191101 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72195191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36097598 + 36097599.

It is an arithmetic number, because the mean of its divisors is an integer number (36097599).

Almost surely, 2^72195197 is an apocalyptic number.

It is an amenable number.

72195197 is a deficient number, since it is larger than the sum of its proper divisors (1).

72195197 is an equidigital number, since it uses as much as digits as its factorization.

72195197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 39690, while the sum is 41.

The square root of 72195197 is about 8496.7756825751. The cubic root of 72195197 is about 416.3923754918.

The spelling of 72195197 in words is "seventy-two million, one hundred ninety-five thousand, one hundred ninety-seven".