71321056 has 12 divisors (see below), whose sum is σ = 140413392. Its totient is φ = 35660512.

The previous prime is 71321053. The next prime is 71321057. The reversal of 71321056 is 65012317.

It is a self number, because there is not a number n which added to its sum of digits gives 71321056.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71321051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1114360 + ... + 1114423.

It is an arithmetic number, because the mean of its divisors is an integer number (11701116).

Almost surely, 2^71321056 is an apocalyptic number.

It is an amenable number.

71321056 is a deficient number, since it is larger than the sum of its proper divisors (69092336).

71321056 is a wasteful number, since it uses less digits than its factorization.

71321056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2228793 (or 2228785 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 71321056 is about 8445.1794533923. The cubic root of 71321056 is about 414.7049841155.

The spelling of 71321056 in words is "seventy-one million, three hundred twenty-one thousand, fifty-six".