51784425 has 144 divisors (see below), whose sum is σ = 119932800. Its totient is φ = 21168000.

The previous prime is 51784399. The next prime is 51784433. The reversal of 51784425 is 52448715.

51784425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51784425 - 2⁶ = 51784361 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 51784425.

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 143 ways as a sum of consecutive naturals, for example, 848895 + ... + 848955.

Almost surely, 2^51784425 is an apocalyptic number.

51784425 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51784425 is an abundant number, since it is smaller than the sum of its proper divisors (68148375).

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

51784425 is a wasteful number, since it uses less digits than its factorization.

51784425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109 (or 87 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 51784425 is about 7196.1395900858. The cubic root of 51784425 is about 372.7346088996.

The spelling of 51784425 in words is "fifty-one million, seven hundred eighty-four thousand, four hundred twenty-five".