71052212 has 48 divisors (see below), whose sum is σ = 155702400. Its totient is φ = 27561600.

The previous prime is 71052199. The next prime is 71052239. The reversal of 71052212 is 21225017.

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 15 ways as a sum of consecutive naturals, for example, 107162 + ... + 107822.

It is an arithmetic number, because the mean of its divisors is an integer number (3243800).

Almost surely, 2^71052212 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 71052212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77851200).

71052212 is an abundant number, since it is smaller than the sum of its proper divisors (84650188).

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

71052212 is a wasteful number, since it uses less digits than its factorization.

71052212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032 (or 1030 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 71052212 is about 8429.2474159915. The cubic root of 71052212 is about 414.1832525956.

Adding to 71052212 its reverse (21225017), we get a palindrome (92277229).

The spelling of 71052212 in words is "seventy-one million, fifty-two thousand, two hundred twelve".