51159287 has 4 divisors (see below), whose sum is σ = 51382920. Its totient is φ = 50935656.

The previous prime is 51159233. The next prime is 51159319. The reversal of 51159287 is 78295115.

51159287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51159287 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 51159287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51159187) 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 3 ways as a sum of consecutive naturals, for example, 111473 + ... + 111930.

It is an arithmetic number, because the mean of its divisors is an integer number (12845730).

Almost surely, 2^51159287 is an apocalyptic number.

51159287 is a deficient number, since it is larger than the sum of its proper divisors (223633).

51159287 is a wasteful number, since it uses less digits than its factorization.

51159287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223632.

The product of its digits is 25200, while the sum is 38.

The square root of 51159287 is about 7152.5720548625. The cubic root of 51159287 is about 371.2286571488.

The spelling of 51159287 in words is "fifty-one million, one hundred fifty-nine thousand, two hundred eighty-seven".