71253252 has 108 divisors (see below), whose sum is σ = 216443136. Its totient is φ = 19686240.

The previous prime is 71253251. The next prime is 71253263. The reversal of 71253252 is 25235217.

It is not an unprimeable number, because it can be changed into a prime (71253251) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 54033 + ... + 55335.

Almost surely, 2^71253252 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 71253252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108221568).

71253252 is an abundant number, since it is smaller than the sum of its proper divisors (145189884).

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

71253252 is a wasteful number, since it uses less digits than its factorization.

71253252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1358 (or 1346 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 71253252 is about 8441.1641377241. The cubic root of 71253252 is about 414.5735242367.

Adding to 71253252 its reverse (25235217), we get a palindrome (96488469).

The spelling of 71253252 in words is "seventy-one million, two hundred fifty-three thousand, two hundred fifty-two".