51065857 has 8 divisors (see below), whose sum is σ = 52423200. Its totient is φ = 49725024.

The previous prime is 51065851. The next prime is 51065879. The reversal of 51065857 is 75856015.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51065857 is a prime.

It is a super-3 number, since 3×51065857³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51065851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2269 + ... + 10357.

It is an arithmetic number, because the mean of its divisors is an integer number (6552900).

Almost surely, 2^51065857 is an apocalyptic number.

It is an amenable number.

51065857 is a deficient number, since it is larger than the sum of its proper divisors (1357343).

51065857 is a wasteful number, since it uses less digits than its factorization.

51065857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8255.

The product of its (nonzero) digits is 42000, while the sum is 37.

The square root of 51065857 is about 7146.0378532443. The cubic root of 51065857 is about 371.0025331426.

The spelling of 51065857 in words is "fifty-one million, sixty-five thousand, eight hundred fifty-seven".