51055600561 has 8 divisors (see below), whose sum is σ = 58398177024. Its totient is φ = 43725253920.

The previous prime is 51055600543. The next prime is 51055600573. The reversal of 51055600561 is 16500655015.

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 51055600561 - 2⁹ = 51055600049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51055600861) 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, 3048505 + ... + 3065206.

It is an arithmetic number, because the mean of its divisors is an integer number (7299772128).

Almost surely, 2^51055600561 is an apocalyptic number.

It is an amenable number.

51055600561 is a deficient number, since it is larger than the sum of its proper divisors (7342576463).

51055600561 is a wasteful number, since it uses less digits than its factorization.

51055600561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6114911.

The product of its (nonzero) digits is 22500, while the sum is 34.

The spelling of 51055600561 in words is "fifty-one billion, fifty-five million, six hundred thousand, five hundred sixty-one".