71957227 has 2 divisors, whose sum is σ = 71957228. Its totient is φ = 71957226.

The previous prime is 71957213. The next prime is 71957233. The reversal of 71957227 is 72275917.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71957227 - 2¹¹ = 71955179 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71957227.

It is not a weakly prime, because it can be changed into another prime (71957287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35978613 + 35978614.

It is an arithmetic number, because the mean of its divisors is an integer number (35978614).

Almost surely, 2^71957227 is an apocalyptic number.

71957227 is a deficient number, since it is larger than the sum of its proper divisors (1).

71957227 is an equidigital number, since it uses as much as digits as its factorization.

71957227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61740, while the sum is 40.

The square root of 71957227 is about 8482.7605766048. The cubic root of 71957227 is about 415.9343673422.

The spelling of 71957227 in words is "seventy-one million, nine hundred fifty-seven thousand, two hundred twenty-seven".