71105297 has 2 divisors, whose sum is σ = 71105298. Its totient is φ = 71105296.

The previous prime is 71105267. The next prime is 71105299. The reversal of 71105297 is 79250117.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58967041 + 12138256 = 7679^2 + 3484^2 .

It is an emirp because it is prime and its reverse (79250117) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71105297 - 2⁶ = 71105233 is a prime.

It is a super-2 number, since 2×71105297² = 10111926522916418, which contains 22 as substring.

Together with 71105299, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (71105299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35552648 + 35552649.

It is an arithmetic number, because the mean of its divisors is an integer number (35552649).

Almost surely, 2^71105297 is an apocalyptic number.

It is an amenable number.

71105297 is a deficient number, since it is larger than the sum of its proper divisors (1).

71105297 is an equidigital number, since it uses as much as digits as its factorization.

71105297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4410, while the sum is 32.

The square root of 71105297 is about 8432.3956856874. The cubic root of 71105297 is about 414.2863760309.

The spelling of 71105297 in words is "seventy-one million, one hundred five thousand, two hundred ninety-seven".