51000557585 has 8 divisors (see below), whose sum is σ = 61362150720. Its totient is φ = 40692791664.

The previous prime is 51000557557. The next prime is 51000557653. The reversal of 51000557585 is 58575500015.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51000557585 - 2⁸ = 51000557329 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13454717 + ... + 13458506.

It is an arithmetic number, because the mean of its divisors is an integer number (7670268840).

Almost surely, 2^51000557585 is an apocalyptic number.

It is an amenable number.

51000557585 is a deficient number, since it is larger than the sum of its proper divisors (10361593135).

51000557585 is a wasteful number, since it uses less digits than its factorization.

51000557585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26913607.

The product of its (nonzero) digits is 175000, while the sum is 41.

The spelling of 51000557585 in words is "fifty-one billion, five hundred fifty-seven thousand, five hundred eighty-five".