51284127 has 4 divisors (see below), whose sum is σ = 68378840. Its totient is φ = 34189416.

The previous prime is 51284047. The next prime is 51284131. The reversal of 51284127 is 72148215.

51284127 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 not a de Polignac number, because 51284127 - 2⁸ = 51283871 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51284094 and 51284103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51284027) 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, 8547352 + ... + 8547357.

It is an arithmetic number, because the mean of its divisors is an integer number (17094710).

Almost surely, 2^51284127 is an apocalyptic number.

51284127 is a deficient number, since it is larger than the sum of its proper divisors (17094713).

51284127 is a wasteful number, since it uses less digits than its factorization.

51284127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17094712.

The product of its digits is 4480, while the sum is 30.

The square root of 51284127 is about 7161.2936680463. The cubic root of 51284127 is about 371.5303719341.

The spelling of 51284127 in words is "fifty-one million, two hundred eighty-four thousand, one hundred twenty-seven".