51282684 has 18 divisors (see below), whose sum is σ = 129631320. Its totient is φ = 17094216.

The previous prime is 51282683. The next prime is 51282697. The reversal of 51282684 is 48628215.

51282684 is a `hidden beast` number, since 512 + 82 + 68 + 4 = 666.

51282684 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1424519 = 51282684 / (5 + 1 + 2 + 8 + 2 + 6 + 8 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51282683) 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 5 ways as a sum of consecutive naturals, for example, 712224 + ... + 712295.

It is an arithmetic number, because the mean of its divisors is an integer number (7201740).

Almost surely, 2^51282684 is an apocalyptic number.

It is an amenable number.

51282684 is an abundant number, since it is smaller than the sum of its proper divisors (78348636).

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

51282684 is a wasteful number, since it uses less digits than its factorization.

51282684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1424529 (or 1424524 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 51282684 is about 7161.1929173846. The cubic root of 51282684 is about 371.5268872734.

The spelling of 51282684 in words is "fifty-one million, two hundred eighty-two thousand, six hundred eighty-four".