71012547 has 12 divisors (see below), whose sum is σ = 103873120. Its totient is φ = 46741968.

The previous prime is 71012531. The next prime is 71012549. The reversal of 71012547 is 74521017.

It is not a de Polignac number, because 71012547 - 2⁴ = 71012531 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71012547.

It is not an unprimeable number, because it can be changed into a prime (71012549) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49228 + ... + 50649.

Almost surely, 2^71012547 is an apocalyptic number.

71012547 is a deficient number, since it is larger than the sum of its proper divisors (32860573).

71012547 is a wasteful number, since it uses less digits than its factorization.

71012547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99962 (or 99959 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 71012547 is about 8426.8942677596. The cubic root of 71012547 is about 414.1061654494.

The spelling of 71012547 in words is "seventy-one million, twelve thousand, five hundred forty-seven".