51384278 has 8 divisors (see below), whose sum is σ = 84083400. Its totient is φ = 23356480.

The previous prime is 51384257. The next prime is 51384293. The reversal of 51384278 is 87248315.

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

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, 1167803 + ... + 1167846.

It is an arithmetic number, because the mean of its divisors is an integer number (10510425).

Almost surely, 2^51384278 is an apocalyptic number.

51384278 is a deficient number, since it is larger than the sum of its proper divisors (32699122).

51384278 is a wasteful number, since it uses less digits than its factorization.

51384278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2335662.

The product of its digits is 53760, while the sum is 38.

The square root of 51384278 is about 7168.2827790204. The cubic root of 51384278 is about 371.7720642810.

The spelling of 51384278 in words is "fifty-one million, three hundred eighty-four thousand, two hundred seventy-eight".