51428339 has 8 divisors (see below), whose sum is σ = 53399520. Its totient is φ = 49470400.

The previous prime is 51428327. The next prime is 51428341. The reversal of 51428339 is 93382415.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51428339 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51428299 and 51428308.

It is not an unprimeable number, because it can be changed into a prime (51428359) 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, 4994 + ... + 11304.

It is an arithmetic number, because the mean of its divisors is an integer number (6674940).

Almost surely, 2^51428339 is an apocalyptic number.

51428339 is a deficient number, since it is larger than the sum of its proper divisors (1971181).

51428339 is a wasteful number, since it uses less digits than its factorization.

51428339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6621.

The product of its digits is 25920, while the sum is 35.

The square root of 51428339 is about 7171.3554506802. The cubic root of 51428339 is about 371.8782963152.

The spelling of 51428339 in words is "fifty-one million, four hundred twenty-eight thousand, three hundred thirty-nine".