71213056 has 28 divisors (see below), whose sum is σ = 142433802. Its totient is φ = 35602432.

The previous prime is 71213053. The next prime is 71213069. The reversal of 71213056 is 65031217.

It can be written as a sum of positive squares in only one way, i.e., 70291456 + 921600 = 8384^2 + 960^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 71213056.

It is not an unprimeable number, because it can be changed into a prime (71213053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3846 + ... + 12538.

Almost surely, 2^71213056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71213056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71216901).

71213056 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

71213056 is an frugal number, since it uses more digits than its factorization.

71213056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8719 (or 8695 counting only the distinct ones).

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

The square root of 71213056 is about 8438.7828506248. The cubic root of 71213056 is about 414.4955519736.

The spelling of 71213056 in words is "seventy-one million, two hundred thirteen thousand, fifty-six".