51682385 has 8 divisors (see below), whose sum is σ = 62068200. Its totient is φ = 41313024.

The previous prime is 51682373. The next prime is 51682387. The reversal of 51682385 is 58328615.

It can be written as a sum of positive squares in 4 ways, for example, as 173056 + 51509329 = 416^2 + 7177^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 51682385 - 2⁴ = 51682369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51682387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4409 + ... + 11081.

It is an arithmetic number, because the mean of its divisors is an integer number (7758525).

Almost surely, 2^51682385 is an apocalyptic number.

It is an amenable number.

51682385 is a deficient number, since it is larger than the sum of its proper divisors (10385815).

51682385 is a wasteful number, since it uses less digits than its factorization.

51682385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8227.

The product of its digits is 57600, while the sum is 38.

The square root of 51682385 is about 7189.0461815181. The cubic root of 51682385 is about 372.4896263045.

The spelling of 51682385 in words is "fifty-one million, six hundred eighty-two thousand, three hundred eighty-five".