51384843 has 12 divisors (see below), whose sum is σ = 74293128. Its totient is φ = 34224000.

The previous prime is 51384799. The next prime is 51384857. The reversal of 51384843 is 34848315.

It is not a de Polignac number, because 51384843 - 2²⁰ = 50336267 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51384798 and 51384807.

It is not an unprimeable number, because it can be changed into a prime (51384343) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10843 + ... + 14843.

It is an arithmetic number, because the mean of its divisors is an integer number (6191094).

Almost surely, 2^51384843 is an apocalyptic number.

51384843 is a deficient number, since it is larger than the sum of its proper divisors (22908285).

51384843 is a wasteful number, since it uses less digits than its factorization.

51384843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5434 (or 5431 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 51384843 is about 7168.3221886296. The cubic root of 51384843 is about 371.7734268927.

The spelling of 51384843 in words is "fifty-one million, three hundred eighty-four thousand, eight hundred forty-three".