71540516 has 12 divisors (see below), whose sum is σ = 125744220. Its totient is φ = 35613600.

The previous prime is 71540501. The next prime is 71540527. The reversal of 71540516 is 61504517.

It can be written as a sum of positive squares in 2 ways, for example, as 64000000 + 7540516 = 8000^2 + 2746^2 .

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, 38135 + ... + 39966.

It is an arithmetic number, because the mean of its divisors is an integer number (10478685).

Almost surely, 2^71540516 is an apocalyptic number.

It is an amenable number.

71540516 is a deficient number, since it is larger than the sum of its proper divisors (54203704).

71540516 is a wasteful number, since it uses less digits than its factorization.

71540516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78334 (or 78332 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 71540516 is about 8458.1626846497. The cubic root of 71540516 is about 415.1299075574.

The spelling of 71540516 in words is "seventy-one million, five hundred forty thousand, five hundred sixteen".