51856837 has 8 divisors (see below), whose sum is σ = 52431840. Its totient is φ = 51285360.

The previous prime is 51856799. The next prime is 51856867. The reversal of 51856837 is 73865815.

51856837 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 51856837 - 2⁷ = 51856709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51856793 and 51856802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51856867) 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 7 ways as a sum of consecutive naturals, for example, 37083 + ... + 38455.

It is an arithmetic number, because the mean of its divisors is an integer number (6553980).

Almost surely, 2^51856837 is an apocalyptic number.

It is an amenable number.

51856837 is a deficient number, since it is larger than the sum of its proper divisors (575003).

51856837 is a wasteful number, since it uses less digits than its factorization.

51856837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1763.

The product of its digits is 201600, while the sum is 43.

The square root of 51856837 is about 7201.1691411881. The cubic root of 51856837 is about 372.9082639944.

The spelling of 51856837 in words is "fifty-one million, eight hundred fifty-six thousand, eight hundred thirty-seven".