51284575859 has 4 divisors (see below), whose sum is σ = 55946810040. Its totient is φ = 46622341680.

The previous prime is 51284575843. The next prime is 51284575897. The reversal of 51284575859 is 95857548215.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 51284575859 - 2⁴ = 51284575843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51284575798 and 51284575807.

It is not an unprimeable number, because it can be changed into a prime (51284575759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2331117074 + ... + 2331117095.

It is an arithmetic number, because the mean of its divisors is an integer number (13986702510).

Almost surely, 2^51284575859 is an apocalyptic number.

51284575859 is a deficient number, since it is larger than the sum of its proper divisors (4662234181).

51284575859 is a wasteful number, since it uses less digits than its factorization.

51284575859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4662234180.

The product of its digits is 20160000, while the sum is 59.

The spelling of 51284575859 in words is "fifty-one billion, two hundred eighty-four million, five hundred seventy-five thousand, eight hundred fifty-nine".