71051471 has 4 divisors (see below), whose sum is σ = 71181912. Its totient is φ = 70921032.

The previous prime is 71051443. The next prime is 71051489. The reversal of 71051471 is 17415017.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71051471 is a prime.

It is a super-3 number, since 3×71051471³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71051471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71051671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64400 + ... + 65493.

It is an arithmetic number, because the mean of its divisors is an integer number (17795478).

Almost surely, 2^71051471 is an apocalyptic number.

71051471 is a deficient number, since it is larger than the sum of its proper divisors (130441).

71051471 is a wasteful number, since it uses less digits than its factorization.

71051471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130440.

The product of its (nonzero) digits is 980, while the sum is 26.

The square root of 71051471 is about 8429.2034617750. The cubic root of 71051471 is about 414.1818127583.

Adding to 71051471 its reverse (17415017), we get a palindrome (88466488).

The spelling of 71051471 in words is "seventy-one million, fifty-one thousand, four hundred seventy-one".