71321052 has 96 divisors (see below), whose sum is σ = 197648640. Its totient is φ = 19768320.

The previous prime is 71321051. The next prime is 71321053. The reversal of 71321052 is 25012317.

It is an interprime number because it is at equal distance from previous prime (71321051) and next prime (71321053).

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 in 31 ways as a sum of consecutive naturals, for example, 82599 + ... + 83457.

It is an arithmetic number, because the mean of its divisors is an integer number (2058840).

Almost surely, 2^71321052 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 71321052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98824320).

71321052 is an abundant number, since it is smaller than the sum of its proper divisors (126327588).

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

71321052 is a wasteful number, since it uses less digits than its factorization.

71321052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931 (or 929 counting only the distinct ones).

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

The square root of 71321052 is about 8445.1792165708. The cubic root of 71321052 is about 414.7049763627.

Adding to 71321052 its reverse (25012317), we get a palindrome (96333369).

It can be divided in two parts, 71 and 321052, that added together give a palindrome (321123).

The spelling of 71321052 in words is "seventy-one million, three hundred twenty-one thousand, fifty-two".