71255983 has 2 divisors, whose sum is σ = 71255984. Its totient is φ = 71255982.

The previous prime is 71255953. The next prime is 71255999. The reversal of 71255983 is 38955217.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71255983 - 2²⁵ = 37701551 is a prime.

It is a super-2 number, since 2×71255983² = 10154830226592578, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71255953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35627991 + 35627992.

It is an arithmetic number, because the mean of its divisors is an integer number (35627992).

Almost surely, 2^71255983 is an apocalyptic number.

71255983 is a deficient number, since it is larger than the sum of its proper divisors (1).

71255983 is an equidigital number, since it uses as much as digits as its factorization.

71255983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 40.

The square root of 71255983 is about 8441.3259029610. The cubic root of 71255983 is about 414.5788207708.

The spelling of 71255983 in words is "seventy-one million, two hundred fifty-five thousand, nine hundred eighty-three".