71255347 has 4 divisors (see below), whose sum is σ = 75446856. Its totient is φ = 67063840.

The previous prime is 71255281. The next prime is 71255351. The reversal of 71255347 is 74355217.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71255347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71255047) 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, 2095729 + ... + 2095762.

It is an arithmetic number, because the mean of its divisors is an integer number (18861714).

Almost surely, 2^71255347 is an apocalyptic number.

71255347 is a deficient number, since it is larger than the sum of its proper divisors (4191509).

71255347 is a wasteful number, since it uses less digits than its factorization.

71255347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4191508.

The product of its digits is 29400, while the sum is 34.

The square root of 71255347 is about 8441.2882310699. The cubic root of 71255347 is about 414.5775873169.

The spelling of 71255347 in words is "seventy-one million, two hundred fifty-five thousand, three hundred forty-seven".