65171371 has 4 divisors (see below), whose sum is σ = 65189152. Its totient is φ = 65153592.

The previous prime is 65171357. The next prime is 65171377. The reversal of 65171371 is 17317156.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65171371 - 2¹⁵ = 65138603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65171377) 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 in 3 ways as a sum of consecutive naturals, for example, 1140 + ... + 11473.

It is an arithmetic number, because the mean of its divisors is an integer number (16297288).

Almost surely, 2^65171371 is an apocalyptic number.

65171371 is a deficient number, since it is larger than the sum of its proper divisors (17781).

65171371 is a wasteful number, since it uses less digits than its factorization.

65171371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17780.

The product of its digits is 4410, while the sum is 31.

The square root of 65171371 is about 8072.8787306636. The cubic root of 65171371 is about 402.4256174676.

The spelling of 65171371 in words is "sixty-five million, one hundred seventy-one thousand, three hundred seventy-one".