51285418 has 8 divisors (see below), whose sum is σ = 78076512. Its totient is φ = 25259916.

The previous prime is 51285361. The next prime is 51285431. The reversal of 51285418 is 81458215.

51285418 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 an unprimeable number.

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, 191230 + ... + 191497.

It is an arithmetic number, because the mean of its divisors is an integer number (9759564).

Almost surely, 2^51285418 is an apocalyptic number.

51285418 is a deficient number, since it is larger than the sum of its proper divisors (26791094).

51285418 is a wasteful number, since it uses less digits than its factorization.

51285418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382796.

The product of its digits is 12800, while the sum is 34.

The square root of 51285418 is about 7161.3838048243. The cubic root of 51285418 is about 371.5334894789.

The spelling of 51285418 in words is "fifty-one million, two hundred eighty-five thousand, four hundred eighteen".