71255047 has 2 divisors, whose sum is σ = 71255048. Its totient is φ = 71255046.

The previous prime is 71255039. The next prime is 71255069. The reversal of 71255047 is 74055217.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71255047 - 2³ = 71255039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71255017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35627523 + 35627524.

It is an arithmetic number, because the mean of its divisors is an integer number (35627524).

Almost surely, 2^71255047 is an apocalyptic number.

71255047 is a deficient number, since it is larger than the sum of its proper divisors (1).

71255047 is an equidigital number, since it uses as much as digits as its factorization.

71255047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 71255047 is about 8441.2704612517. The cubic root of 71255047 is about 414.5770054964.

The spelling of 71255047 in words is "seventy-one million, two hundred fifty-five thousand, forty-seven".