51839911 has 8 divisors (see below), whose sum is σ = 52390800. Its totient is φ = 51291840.

The previous prime is 51839899. The next prime is 51839929. The reversal of 51839911 is 11993815.

It is a happy number.

51839911 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 51839911 - 2¹⁹ = 51315623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51839941) 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 7 ways as a sum of consecutive naturals, for example, 63675 + ... + 64483.

It is an arithmetic number, because the mean of its divisors is an integer number (6548850).

Almost surely, 2^51839911 is an apocalyptic number.

51839911 is a deficient number, since it is larger than the sum of its proper divisors (550889).

51839911 is a wasteful number, since it uses less digits than its factorization.

51839911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1409.

The product of its digits is 9720, while the sum is 37.

The square root of 51839911 is about 7199.9938194418. The cubic root of 51839911 is about 372.8676873319.

The spelling of 51839911 in words is "fifty-one million, eight hundred thirty-nine thousand, nine hundred eleven".