71258947 has 4 divisors (see below), whose sum is σ = 71314776. Its totient is φ = 71203120.

The previous prime is 71258939. The next prime is 71258959. The reversal of 71258947 is 74985217.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74985217 = 8069 ⋅9293.

It is a cyclic number.

It is not a de Polignac number, because 71258947 - 2³ = 71258939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71253947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25954 + ... + 28567.

It is an arithmetic number, because the mean of its divisors is an integer number (17828694).

Almost surely, 2^71258947 is an apocalyptic number.

71258947 is a deficient number, since it is larger than the sum of its proper divisors (55829).

71258947 is a wasteful number, since it uses less digits than its factorization.

71258947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55828.

The product of its digits is 141120, while the sum is 43.

The square root of 71258947 is about 8441.5014659716. The cubic root of 71258947 is about 414.5845690347.

The spelling of 71258947 in words is "seventy-one million, two hundred fifty-eight thousand, nine hundred forty-seven".