71211152 has 10 divisors (see below), whose sum is σ = 137971638. Its totient is φ = 35605568.

The previous prime is 71211149. The next prime is 71211163. The reversal of 71211152 is 25111217.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 62473216 + 8737936 = 7904^2 + 2956^2 .

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, 2225333 + ... + 2225364.

Almost surely, 2^71211152 is an apocalyptic number.

It is an amenable number.

71211152 is a deficient number, since it is larger than the sum of its proper divisors (66760486).

71211152 is a wasteful number, since it uses less digits than its factorization.

71211152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4450705 (or 4450699 counting only the distinct ones).

The product of its digits is 140, while the sum is 20.

The square root of 71211152 is about 8438.6700373933. The cubic root of 71211152 is about 414.4918578637.

Adding to 71211152 its reverse (25111217), we get a palindrome (96322369).

The spelling of 71211152 in words is "seventy-one million, two hundred eleven thousand, one hundred fifty-two".