71500516 has 24 divisors (see below), whose sum is σ = 127247904. Its totient is φ = 35148480.

The previous prime is 71500511. The next prime is 71500531. The reversal of 71500516 is 61500517.

It is a super-2 number, since 2×71500516² = 10224647576532512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71500511) 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, 93576 + ... + 94336.

It is an arithmetic number, because the mean of its divisors is an integer number (5301996).

Almost surely, 2^71500516 is an apocalyptic number.

It is an amenable number.

71500516 is a deficient number, since it is larger than the sum of its proper divisors (55747388).

71500516 is a wasteful number, since it uses less digits than its factorization.

71500516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131 (or 1129 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 25.

The square root of 71500516 is about 8455.7977743085. The cubic root of 71500516 is about 415.0525234727.

Subtracting from 71500516 its reverse (61500517), we obtain a palindrome (9999999).

The spelling of 71500516 in words is "seventy-one million, five hundred thousand, five hundred sixteen".