51255288585 has 24 divisors (see below), whose sum is σ = 90732769920. Its totient is φ = 26754532512.

The previous prime is 51255288571. The next prime is 51255288661. The reversal of 51255288585 is 58588255215.

It is a happy number.

51255288585 is a `hidden beast` number, since 5 + 1 + 2 + 5 + 52 + 8 + 8 + 585 = 666.

It is not a de Polignac number, because 51255288585 - 2²⁴ = 51238511369 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 12114975 + ... + 12119204.

It is an arithmetic number, because the mean of its divisors is an integer number (3780532080).

Almost surely, 2^51255288585 is an apocalyptic number.

It is an amenable number.

51255288585 is a deficient number, since it is larger than the sum of its proper divisors (39477481335).

51255288585 is a wasteful number, since it uses less digits than its factorization.

51255288585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24234237 (or 24234234 counting only the distinct ones).

The product of its digits is 6400000, while the sum is 54.

The spelling of 51255288585 in words is "fifty-one billion, two hundred fifty-five million, two hundred eighty-eight thousand, five hundred eighty-five".