71152393 has 4 divisors (see below), whose sum is σ = 76625668. Its totient is φ = 65679120.

The previous prime is 71152391. The next prime is 71152423. The reversal of 71152393 is 39325117.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32114889 + 39037504 = 5667^2 + 6248^2 .

It is not a de Polignac number, because 71152393 - 2¹ = 71152391 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71152391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2736618 + ... + 2736643.

It is an arithmetic number, because the mean of its divisors is an integer number (19156417).

Almost surely, 2^71152393 is an apocalyptic number.

It is an amenable number.

71152393 is a deficient number, since it is larger than the sum of its proper divisors (5473275).

71152393 is a wasteful number, since it uses less digits than its factorization.

71152393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5473274.

The product of its digits is 5670, while the sum is 31.

The square root of 71152393 is about 8435.1877868842. The cubic root of 71152393 is about 414.3778222188.

The spelling of 71152393 in words is "seventy-one million, one hundred fifty-two thousand, three hundred ninety-three".