71415047 has 6 divisors (see below), whose sum is σ = 78497664. Its totient is φ = 64922660.

The previous prime is 71415037. The next prime is 71415059. The reversal of 71415047 is 74051417.

It is not a de Polignac number, because 71415047 - 2¹⁰ = 71414023 is a prime.

It is a super-4 number, since 4×71415047⁴ (a number of 33 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71415037) 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 5 ways as a sum of consecutive naturals, for example, 294983 + ... + 295224.

It is an arithmetic number, because the mean of its divisors is an integer number (13082944).

Almost surely, 2^71415047 is an apocalyptic number.

71415047 is a deficient number, since it is larger than the sum of its proper divisors (7082617).

71415047 is a wasteful number, since it uses less digits than its factorization.

71415047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590229 (or 590218 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 71415047 is about 8450.7423934232. The cubic root of 71415047 is about 414.8870781943.

The spelling of 71415047 in words is "seventy-one million, four hundred fifteen thousand, forty-seven".