71071 has 16 divisors (see below), whose sum is σ = 96768. Its totient is φ = 50400.

The previous prime is 71069. The next prime is 71081. The reversal of 71071 is 17017.

71071 = T₉₈ + T₉₉ + ... + T₁₁₀.

It is a happy number.

It is not a de Polignac number, because 71071 - 2¹ = 71069 is a prime.

It is an Ulam number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 966 + ... + 1036.

It is an arithmetic number, because the mean of its divisors is an integer number (6048).

2⁷¹⁰⁷¹ is an apocalyptic number.

71071 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

71071 is a deficient number, since it is larger than the sum of its proper divisors (25697).

71071 is a wasteful number, since it uses less digits than its factorization.

71071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102.

The product of its (nonzero) digits is 49, while the sum is 16.

The square root of 71071 is about 266.5914477248. The cubic root of 71071 is about 41.4219756217.

Adding to 71071 its reverse (17017), we get a palindrome (88088).

The spelling of 71071 in words is "seventy-one thousand, seventy-one", and thus it is an iban number.