51000839 has 8 divisors (see below), whose sum is σ = 52005120. Its totient is φ = 50001336.

The previous prime is 51000751. The next prime is 51000841. The reversal of 51000839 is 93800015.

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 51000839 - 2¹⁶ = 50935303 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 (51000139) 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, 26384 + ... + 28250.

It is an arithmetic number, because the mean of its divisors is an integer number (6500640).

Almost surely, 2^51000839 is an apocalyptic number.

51000839 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

51000839 is a deficient number, since it is larger than the sum of its proper divisors (1004281).

51000839 is a wasteful number, since it uses less digits than its factorization.

51000839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2389.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 51000839 is about 7141.4871700508. The cubic root of 51000839 is about 370.8450104923.

The spelling of 51000839 in words is "fifty-one million, eight hundred thirty-nine", and thus it is an aban number.