71123252 has 6 divisors (see below), whose sum is σ = 124465698. Its totient is φ = 35561624.

The previous prime is 71123237. The next prime is 71123279. The reversal of 71123252 is 25232117.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 70492816 + 630436 = 8396^2 + 794^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8890403 + ... + 8890410.

It is an arithmetic number, because the mean of its divisors is an integer number (20744283).

Almost surely, 2^71123252 is an apocalyptic number.

It is an amenable number.

71123252 is a deficient number, since it is larger than the sum of its proper divisors (53342446).

71123252 is a wasteful number, since it uses less digits than its factorization.

71123252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17780817 (or 17780815 counting only the distinct ones).

The product of its digits is 840, while the sum is 23.

The square root of 71123252 is about 8433.4602625494. The cubic root of 71123252 is about 414.3212439717.

Adding to 71123252 its reverse (25232117), we get a palindrome (96355369).

The spelling of 71123252 in words is "seventy-one million, one hundred twenty-three thousand, two hundred fifty-two".