71121160 has 32 divisors (see below), whose sum is σ = 174571200. Its totient is φ = 25862080.

The previous prime is 71121139. The next prime is 71121163. The reversal of 71121160 is 6112117.

It is not an unprimeable number, because it can be changed into a prime (71121163) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 80380 + ... + 81259.

It is an arithmetic number, because the mean of its divisors is an integer number (5455350).

Almost surely, 2^71121160 is an apocalyptic number.

It is an amenable number.

71121160 is an abundant number, since it is smaller than the sum of its proper divisors (103450040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71121160 is a wasteful number, since it uses less digits than its factorization.

71121160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161661 (or 161657 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 19.

The square root of 71121160 is about 8433.3362318836. The cubic root of 71121160 is about 414.3171816877.

Adding to 71121160 its reverse (6112117), we get a palindrome (77233277).

The spelling of 71121160 in words is "seventy-one million, one hundred twenty-one thousand, one hundred sixty".