71161252 has 24 divisors (see below), whose sum is σ = 132572160. Its totient is φ = 33306240.

The previous prime is 71161247. The next prime is 71161291. The reversal of 71161252 is 25216117.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10249 + ... + 15727.

It is an arithmetic number, because the mean of its divisors is an integer number (5523840).

Almost surely, 2^71161252 is an apocalyptic number.

It is an amenable number.

71161252 is a deficient number, since it is larger than the sum of its proper divisors (61410908).

71161252 is a wasteful number, since it uses less digits than its factorization.

71161252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5691 (or 5689 counting only the distinct ones).

The product of its digits is 840, while the sum is 25.

The square root of 71161252 is about 8435.7128922220. The cubic root of 71161252 is about 414.3950192079.

Adding to 71161252 its reverse (25216117), we get a palindrome (96377369).

The spelling of 71161252 in words is "seventy-one million, one hundred sixty-one thousand, two hundred fifty-two".