51187846 has 8 divisors (see below), whose sum is σ = 77180184. Its totient is φ = 25461120.

The previous prime is 51187823. The next prime is 51187847. The reversal of 51187846 is 64878115.

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

It is a junction number, because it is equal to n+sod(n) for n = 51187799 and 51187808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51187847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65920 + ... + 66691.

It is an arithmetic number, because the mean of its divisors is an integer number (9647523).

Almost surely, 2^51187846 is an apocalyptic number.

51187846 is a deficient number, since it is larger than the sum of its proper divisors (25992338).

51187846 is a wasteful number, since it uses less digits than its factorization.

51187846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132806.

The product of its digits is 53760, while the sum is 40.

The square root of 51187846 is about 7154.5681910231. The cubic root of 51187846 is about 371.2977221395.

The spelling of 51187846 in words is "fifty-one million, one hundred eighty-seven thousand, eight hundred forty-six".