71952197 has 2 divisors, whose sum is σ = 71952198. Its totient is φ = 71952196.

The previous prime is 71952193. The next prime is 71952203. The reversal of 71952197 is 79125917.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38763076 + 33189121 = 6226^2 + 5761^2 .

It is a cyclic number.

It is not a de Polignac number, because 71952197 - 2² = 71952193 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 (71952191) 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 as a sum of consecutive naturals, namely, 35976098 + 35976099.

It is an arithmetic number, because the mean of its divisors is an integer number (35976099).

Almost surely, 2^71952197 is an apocalyptic number.

It is an amenable number.

71952197 is a deficient number, since it is larger than the sum of its proper divisors (1).

71952197 is an equidigital number, since it uses as much as digits as its factorization.

71952197 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 71952197 is about 8482.4640877519. The cubic root of 71952197 is about 415.9246754799.

The spelling of 71952197 in words is "seventy-one million, nine hundred fifty-two thousand, one hundred ninety-seven".