71165113 has 4 divisors (see below), whose sum is σ = 72022608. Its totient is φ = 70307620.

The previous prime is 71165063. The next prime is 71165123. The reversal of 71165113 is 31156117.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71165113 - 2²¹ = 69067961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71165123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 428623 + ... + 428788.

It is an arithmetic number, because the mean of its divisors is an integer number (18005652).

Almost surely, 2^71165113 is an apocalyptic number.

It is an amenable number.

71165113 is a deficient number, since it is larger than the sum of its proper divisors (857495).

71165113 is an equidigital number, since it uses as much as digits as its factorization.

71165113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857494.

The product of its digits is 630, while the sum is 25.

The square root of 71165113 is about 8435.9417375892. The cubic root of 71165113 is about 414.4025136902.

The spelling of 71165113 in words is "seventy-one million, one hundred sixty-five thousand, one hundred thirteen".