51158505587 has 8 divisors (see below), whose sum is σ = 58523580672. Its totient is φ = 43807609800.

The previous prime is 51158505583. The next prime is 51158505599. The reversal of 51158505587 is 78550585115.

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 51158505587 - 2² = 51158505583 is a prime.

It is a super-2 number, since 2×51158505587² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51158505583) 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 7 ways as a sum of consecutive naturals, for example, 3537089 + ... + 3551522.

It is an arithmetic number, because the mean of its divisors is an integer number (7315447584).

Almost surely, 2^51158505587 is an apocalyptic number.

51158505587 is a deficient number, since it is larger than the sum of its proper divisors (7365075085).

51158505587 is a wasteful number, since it uses less digits than its factorization.

51158505587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7089649.

The product of its (nonzero) digits is 1400000, while the sum is 50.

The spelling of 51158505587 in words is "fifty-one billion, one hundred fifty-eight million, five hundred five thousand, five hundred eighty-seven".