71571152 has 20 divisors (see below), whose sum is σ = 138805476. Its totient is φ = 35750400.

The previous prime is 71571127. The next prime is 71571163. The reversal of 71571152 is 25117517.

It can be written as a sum of positive squares in 2 ways, for example, as 24840256 + 46730896 = 4984^2 + 6836^2 .

It is a congruent number.

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, 24152 + ... + 26952.

Almost surely, 2^71571152 is an apocalyptic number.

It is an amenable number.

71571152 is a deficient number, since it is larger than the sum of its proper divisors (67234324).

71571152 is a wasteful number, since it uses less digits than its factorization.

71571152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4406 (or 4400 counting only the distinct ones).

The product of its digits is 2450, while the sum is 29.

The square root of 71571152 is about 8459.9735224172. The cubic root of 71571152 is about 415.1891565237.

Adding to 71571152 its reverse (25117517), we get a palindrome (96688669).

The spelling of 71571152 in words is "seventy-one million, five hundred seventy-one thousand, one hundred fifty-two".