71020056 has 32 divisors (see below), whose sum is σ = 178542000. Its totient is φ = 23541120.

The previous prime is 71020009. The next prime is 71020063. The reversal of 71020056 is 65002017.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3831 + ... + 12518.

Almost surely, 2^71020056 is an apocalyptic number.

It is an amenable number.

71020056 is an abundant number, since it is smaller than the sum of its proper divisors (107521944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71020056 is a wasteful number, since it uses less digits than its factorization.

71020056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16539 (or 16535 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 71020056 is about 8427.3397937902. The cubic root of 71020056 is about 414.1207610560.

The spelling of 71020056 in words is "seventy-one million, twenty thousand, fifty-six".