71051 has 4 divisors (see below), whose sum is σ = 71592. Its totient is φ = 70512.

The previous prime is 71039. The next prime is 71059. The reversal of 71051 is 15017.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 71051 - 2¹⁴ = 54667 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (71059) 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, 71 + ... + 383.

It is an arithmetic number, because the mean of its divisors is an integer number (17898).

2⁷¹⁰⁵¹ is an apocalyptic number.

71051 is a deficient number, since it is larger than the sum of its proper divisors (541).

71051 is a wasteful number, since it uses less digits than its factorization.

71051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540.

The product of its (nonzero) digits is 35, while the sum is 14.

The square root of 71051 is about 266.5539345048. The cubic root of 71051 is about 41.4180897553.

Adding to 71051 its reverse (15017), we get a palindrome (86068).

The spelling of 71051 in words is "seventy-one thousand, fifty-one".