71133427 has 2 divisors, whose sum is σ = 71133428. Its totient is φ = 71133426.

The previous prime is 71133379. The next prime is 71133443. The reversal of 71133427 is 72433117.

It is a strong prime.

It is an emirp because it is prime and its reverse (72433117) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71133427 is a prime.

It is a Chen prime.

It is equal to p_4180771 and since 71133427 and 4180771 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 71133395 and 71133404.

It is not a weakly prime, because it can be changed into another prime (71133497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35566713 + 35566714.

It is an arithmetic number, because the mean of its divisors is an integer number (35566714).

Almost surely, 2^71133427 is an apocalyptic number.

71133427 is a deficient number, since it is larger than the sum of its proper divisors (1).

71133427 is an equidigital number, since it uses as much as digits as its factorization.

71133427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3528, while the sum is 28.

The square root of 71133427 is about 8434.0634927655. The cubic root of 71133427 is about 414.3410008375.

The spelling of 71133427 in words is "seventy-one million, one hundred thirty-three thousand, four hundred twenty-seven".