71957027 has 4 divisors (see below), whose sum is σ = 72031656. Its totient is φ = 71882400.

The previous prime is 71957023. The next prime is 71957051. The reversal of 71957027 is 72075917.

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

It is a cyclic number.

It is not a de Polignac number, because 71957027 - 2² = 71957023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71957021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35849 + ... + 37802.

It is an arithmetic number, because the mean of its divisors is an integer number (18007914).

Almost surely, 2^71957027 is an apocalyptic number.

71957027 is a deficient number, since it is larger than the sum of its proper divisors (74629).

71957027 is an equidigital number, since it uses as much as digits as its factorization.

71957027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74628.

The product of its (nonzero) digits is 30870, while the sum is 38.

The square root of 71957027 is about 8482.7487879814. The cubic root of 71957027 is about 415.9339819886.

The spelling of 71957027 in words is "seventy-one million, nine hundred fifty-seven thousand, twenty-seven".