51816854 has 8 divisors (see below), whose sum is σ = 78028488. Its totient is φ = 25807360.

The previous prime is 51816851. The next prime is 51816859. The reversal of 51816854 is 45861815.

51816854 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51816851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49892 + ... + 50919.

It is an arithmetic number, because the mean of its divisors is an integer number (9753561).

Almost surely, 2^51816854 is an apocalyptic number.

51816854 is a deficient number, since it is larger than the sum of its proper divisors (26211634).

51816854 is a wasteful number, since it uses less digits than its factorization.

51816854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101070.

The product of its digits is 38400, while the sum is 38.

The square root of 51816854 is about 7198.3924594315. The cubic root of 51816854 is about 372.8123986234.

The spelling of 51816854 in words is "fifty-one million, eight hundred sixteen thousand, eight hundred fifty-four".