51918838 has 8 divisors (see below), whose sum is σ = 77909832. Its totient is φ = 25948896.

The previous prime is 51918809. The next prime is 51918847. The reversal of 51918838 is 83881915.

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

It is a junction number, because it is equal to n+sod(n) for n = 51918794 and 51918803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4606 + ... + 11182.

It is an arithmetic number, because the mean of its divisors is an integer number (9738729).

Almost surely, 2^51918838 is an apocalyptic number.

51918838 is a deficient number, since it is larger than the sum of its proper divisors (25990994).

51918838 is a wasteful number, since it uses less digits than its factorization.

51918838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10526.

The product of its digits is 69120, while the sum is 43.

The square root of 51918838 is about 7205.4727811574. The cubic root of 51918838 is about 373.0568234915.

The spelling of 51918838 in words is "fifty-one million, nine hundred eighteen thousand, eight hundred thirty-eight".