71051329 has 2 divisors, whose sum is σ = 71051330. Its totient is φ = 71051328.

The previous prime is 71051327. The next prime is 71051339. The reversal of 71051329 is 92315017.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69555600 + 1495729 = 8340^2 + 1223^2 .

It is an emirp because it is prime and its reverse (92315017) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71051329 - 2¹ = 71051327 is a prime.

Together with 71051327, it forms a pair of twin primes.

It is equal to p_4176190 and since 71051329 and 4176190 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 = 71051297 and 71051306.

It is not a weakly prime, because it can be changed into another prime (71051327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35525664 + 35525665.

It is an arithmetic number, because the mean of its divisors is an integer number (35525665).

Almost surely, 2^71051329 is an apocalyptic number.

It is an amenable number.

71051329 is a deficient number, since it is larger than the sum of its proper divisors (1).

71051329 is an equidigital number, since it uses as much as digits as its factorization.

71051329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 71051329 is about 8429.1950386736. The cubic root of 71051329 is about 414.1815368370.

The spelling of 71051329 in words is "seventy-one million, fifty-one thousand, three hundred twenty-nine".