51384672 has 48 divisors (see below), whose sum is σ = 149874480. Its totient is φ = 17127936.

The previous prime is 51384661. The next prime is 51384679. The reversal of 51384672 is 27648315.

51384672 is a `hidden beast` number, since 513 + 84 + 67 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51384679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28873 + ... + 30600.

It is an arithmetic number, because the mean of its divisors is an integer number (3122385).

Almost surely, 2^51384672 is an apocalyptic number.

It is an amenable number.

51384672 is an abundant number, since it is smaller than the sum of its proper divisors (98489808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51384672 is a wasteful number, since it uses less digits than its factorization.

51384672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59492 (or 59478 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 51384672 is about 7168.3102611424. The cubic root of 51384672 is about 371.7730144927.

The spelling of 51384672 in words is "fifty-one million, three hundred eighty-four thousand, six hundred seventy-two".