71132279 has 2 divisors, whose sum is σ = 71132280. Its totient is φ = 71132278.

The previous prime is 71132263. The next prime is 71132287. The reversal of 71132279 is 97223117.

It is a strong prime.

It is an emirp because it is prime and its reverse (97223117) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71132279 - 2⁴ = 71132263 is a prime.

It is a super-2 number, since 2×71132279² = 10119602231467682, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71132239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35566139 + 35566140.

It is an arithmetic number, because the mean of its divisors is an integer number (35566140).

Almost surely, 2^71132279 is an apocalyptic number.

71132279 is a deficient number, since it is larger than the sum of its proper divisors (1).

71132279 is an equidigital number, since it uses as much as digits as its factorization.

71132279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5292, while the sum is 32.

The square root of 71132279 is about 8433.9954351422. The cubic root of 71132279 is about 414.3387718525.

The spelling of 71132279 in words is "seventy-one million, one hundred thirty-two thousand, two hundred seventy-nine".