51711393 has 8 divisors (see below), whose sum is σ = 69058656. Its totient is φ = 34419200.

The previous prime is 51711391. The next prime is 51711431. The reversal of 51711393 is 39311715.

It is a happy number.

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 51711393 - 2¹ = 51711391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51711393.

It is not an unprimeable number, because it can be changed into a prime (51711391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11523 + ... + 15368.

It is an arithmetic number, because the mean of its divisors is an integer number (8632332).

Almost surely, 2^51711393 is an apocalyptic number.

It is an amenable number.

51711393 is a deficient number, since it is larger than the sum of its proper divisors (17347263).

51711393 is a wasteful number, since it uses less digits than its factorization.

51711393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27535.

The product of its digits is 2835, while the sum is 30.

The square root of 51711393 is about 7191.0634123195. The cubic root of 51711393 is about 372.5593029016.

The spelling of 51711393 in words is "fifty-one million, seven hundred eleven thousand, three hundred ninety-three".