71056 has 10 divisors (see below), whose sum is σ = 137702. Its totient is φ = 35520.

The previous prime is 71039. The next prime is 71059. The reversal of 71056 is 65017.

71056 = T₅₀ + T₅₁ + ... + T₈₁.

It can be written as a sum of positive squares in only one way, i.e., 57600 + 13456 = 240^2 + 116^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71059) by changing a digit.

71056 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2205 + ... + 2236.

2⁷¹⁰⁵⁶ is an apocalyptic number.

It is an amenable number.

71056 is a deficient number, since it is larger than the sum of its proper divisors (66646).

71056 is a wasteful number, since it uses less digits than its factorization.

71056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4449 (or 4443 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 71056 is about 266.5633133047. The cubic root of 71056 is about 41.4190612903.

The spelling of 71056 in words is "seventy-one thousand, fifty-six".