71301161 has 2 divisors, whose sum is σ = 71301162. Its totient is φ = 71301160.

The previous prime is 71301133. The next prime is 71301163. The reversal of 71301161 is 16110317.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71301136 + 25 = 8444^2 + 5^2 .

It is an emirp because it is prime and its reverse (16110317) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71301161 - 2¹⁴ = 71284777 is a prime.

Together with 71301163, 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 (71301163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35650580 + 35650581.

It is an arithmetic number, because the mean of its divisors is an integer number (35650581).

Almost surely, 2^71301161 is an apocalyptic number.

It is an amenable number.

71301161 is a deficient number, since it is larger than the sum of its proper divisors (1).

71301161 is an equidigital number, since it uses as much as digits as its factorization.

71301161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 126, while the sum is 20.

The square root of 71301161 is about 8444.0014803409. The cubic root of 71301161 is about 414.6664198943. Note that the first 3 decimals are identical.

Adding to 71301161 its reverse (16110317), we get a palindrome (87411478).

The spelling of 71301161 in words is "seventy-one million, three hundred one thousand, one hundred sixty-one".