51843825 has 36 divisors (see below), whose sum is σ = 101304528. Its totient is φ = 25135200.

The previous prime is 51843823. The next prime is 51843859. The reversal of 51843825 is 52834815.

It is a happy number.

51843825 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 51843825 - 2¹ = 51843823 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 51843825.

It is not an unprimeable number, because it can be changed into a prime (51843823) 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 35 ways as a sum of consecutive naturals, for example, 7999 + ... + 12948.

Almost surely, 2^51843825 is an apocalyptic number.

51843825 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51843825 is a deficient number, since it is larger than the sum of its proper divisors (49460703).

51843825 is a wasteful number, since it uses less digits than its factorization.

51843825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20974 (or 20966 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 51843825 is about 7200.2656201004. The cubic root of 51843825 is about 372.8770711404.

It can be divided in two parts, 5184 and 3825, that added together give a palindrome (9009).

The spelling of 51843825 in words is "fifty-one million, eight hundred forty-three thousand, eight hundred twenty-five".