71165923 has 2 divisors, whose sum is σ = 71165924. Its totient is φ = 71165922.

The previous prime is 71165867. The next prime is 71165929. The reversal of 71165923 is 32956117.

It is a strong prime.

It is an emirp because it is prime and its reverse (32956117) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71165923 - 2¹³ = 71157731 is a prime.

It is not a weakly prime, because it can be changed into another prime (71165929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35582961 + 35582962.

It is an arithmetic number, because the mean of its divisors is an integer number (35582962).

Almost surely, 2^71165923 is an apocalyptic number.

71165923 is a deficient number, since it is larger than the sum of its proper divisors (1).

71165923 is an equidigital number, since it uses as much as digits as its factorization.

71165923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11340, while the sum is 34.

The square root of 71165923 is about 8435.9897463190. The cubic root of 71165923 is about 414.4040859248.

The spelling of 71165923 in words is "seventy-one million, one hundred sixty-five thousand, nine hundred twenty-three".