51295924585 has 4 divisors (see below), whose sum is σ = 61555109508. Its totient is φ = 41036739664.

The previous prime is 51295924583. The next prime is 51295924613. The reversal of 51295924585 is 58542959215.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13602090384 + 37693834201 = 116628^2 + 194149^2 .

It is a cyclic number.

It is not a de Polignac number, because 51295924585 - 2¹ = 51295924583 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51295924583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5129592454 + ... + 5129592463.

It is an arithmetic number, because the mean of its divisors is an integer number (15388777377).

Almost surely, 2^51295924585 is an apocalyptic number.

It is an amenable number.

51295924585 is a deficient number, since it is larger than the sum of its proper divisors (10259184923).

51295924585 is a wasteful number, since it uses less digits than its factorization.

51295924585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10259184922.

The product of its digits is 6480000, while the sum is 55.

The spelling of 51295924585 in words is "fifty-one billion, two hundred ninety-five million, nine hundred twenty-four thousand, five hundred eighty-five".