71512132 has 12 divisors (see below), whose sum is σ = 132507900. Its totient is φ = 33652736.

The previous prime is 71512121. The next prime is 71512153. The reversal of 71512132 is 23121517.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 66194496 + 5317636 = 8136^2 + 2306^2 .

It is a super-2 number, since 2×71512132² = 10227970046370848, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 525757 + ... + 525892.

It is an arithmetic number, because the mean of its divisors is an integer number (11042325).

Almost surely, 2^71512132 is an apocalyptic number.

It is an amenable number.

71512132 is a deficient number, since it is larger than the sum of its proper divisors (60995768).

71512132 is a wasteful number, since it uses less digits than its factorization.

71512132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051670 (or 1051668 counting only the distinct ones).

The product of its digits is 420, while the sum is 22.

The square root of 71512132 is about 8456.4846124143. The cubic root of 71512132 is about 415.0749987839.

Adding to 71512132 its reverse (23121517), we get a palindrome (94633649).

The spelling of 71512132 in words is "seventy-one million, five hundred twelve thousand, one hundred thirty-two".