71116530 has 16 divisors (see below), whose sum is σ = 170679744. Its totient is φ = 18964400.

The previous prime is 71116517. The next prime is 71116537. The reversal of 71116530 is 3561117.

It is a self number, because there is not a number n which added to its sum of digits gives 71116530.

It is not an unprimeable number, because it can be changed into a prime (71116537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1185246 + ... + 1185305.

It is an arithmetic number, because the mean of its divisors is an integer number (10667484).

Almost surely, 2^71116530 is an apocalyptic number.

71116530 is an abundant number, since it is smaller than the sum of its proper divisors (99563214).

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

71116530 is a wasteful number, since it uses less digits than its factorization.

71116530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2370561.

The product of its (nonzero) digits is 630, while the sum is 24.

The square root of 71116530 is about 8433.0617215813. The cubic root of 71116530 is about 414.3081907855.

Adding to 71116530 its reverse (3561117), we get a palindrome (74677647).

The spelling of 71116530 in words is "seventy-one million, one hundred sixteen thousand, five hundred thirty".