71324513 has 8 divisors (see below), whose sum is σ = 77558208. Its totient is φ = 65197584.

The previous prime is 71324497. The next prime is 71324527. The reversal of 71324513 is 31542317.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71324513 - 2⁴ = 71324497 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71324563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25295 + ... + 27972.

It is an arithmetic number, because the mean of its divisors is an integer number (9694776).

Almost surely, 2^71324513 is an apocalyptic number.

It is an amenable number.

71324513 is a deficient number, since it is larger than the sum of its proper divisors (6233695).

71324513 is a wasteful number, since it uses less digits than its factorization.

71324513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53383.

The product of its digits is 2520, while the sum is 26.

The square root of 71324513 is about 8445.3841238868. The cubic root of 71324513 is about 414.7116843901.

The spelling of 71324513 in words is "seventy-one million, three hundred twenty-four thousand, five hundred thirteen".