51312851 has 8 divisors (see below), whose sum is σ = 55357344. Its totient is φ = 47382400.

The previous prime is 51312847. The next prime is 51312871. The reversal of 51312851 is 15821315.

It is a happy number.

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

It is not a de Polignac number, because 51312851 - 2² = 51312847 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51312851.

It is not an unprimeable number, because it can be changed into a prime (51312871) 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, 27575 + ... + 29376.

It is an arithmetic number, because the mean of its divisors is an integer number (6919668).

Almost surely, 2^51312851 is an apocalyptic number.

51312851 is a deficient number, since it is larger than the sum of its proper divisors (4044493).

51312851 is a wasteful number, since it uses less digits than its factorization.

51312851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57021.

The product of its digits is 1200, while the sum is 26.

The square root of 51312851 is about 7163.2988908742. The cubic root of 51312851 is about 371.5997231300.

The spelling of 51312851 in words is "fifty-one million, three hundred twelve thousand, eight hundred fifty-one".