51782738 has 8 divisors (see below), whose sum is σ = 88770432. Its totient is φ = 22192596.

The previous prime is 51782737. The next prime is 51782743. The reversal of 51782738 is 83728715.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51782695 and 51782704.

It is not an unprimeable number, because it can be changed into a prime (51782737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1849370 + ... + 1849397.

It is an arithmetic number, because the mean of its divisors is an integer number (11096304).

Almost surely, 2^51782738 is an apocalyptic number.

51782738 is a deficient number, since it is larger than the sum of its proper divisors (36987694).

51782738 is a wasteful number, since it uses less digits than its factorization.

51782738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3698776.

The product of its digits is 94080, while the sum is 41.

The square root of 51782738 is about 7196.0223735061. The cubic root of 51782738 is about 372.7305612855.

The spelling of 51782738 in words is "fifty-one million, seven hundred eighty-two thousand, seven hundred thirty-eight".