71871056 has 10 divisors (see below), whose sum is σ = 139250202. Its totient is φ = 35935520.

The previous prime is 71871049. The next prime is 71871071. The reversal of 71871056 is 65017817.

It can be written as a sum of positive squares in only one way, i.e., 45697600 + 26173456 = 6760^2 + 5116^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2245955 + ... + 2245986.

Almost surely, 2^71871056 is an apocalyptic number.

It is an amenable number.

71871056 is a deficient number, since it is larger than the sum of its proper divisors (67379146).

71871056 is a wasteful number, since it uses less digits than its factorization.

71871056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4491949 (or 4491943 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 35.

The square root of 71871056 is about 8477.6798712855. The cubic root of 71871056 is about 415.7682696085.

The spelling of 71871056 in words is "seventy-one million, eight hundred seventy-one thousand, fifty-six".