51550560566 has 8 divisors (see below), whose sum is σ = 78123014760. Its totient is φ = 25509555648.

The previous prime is 51550560547. The next prime is 51550560569. The reversal of 51550560566 is 66506505515.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51550560569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132862076 + ... + 132862463.

It is an arithmetic number, because the mean of its divisors is an integer number (9765376845).

Almost surely, 2^51550560566 is an apocalyptic number.

51550560566 is a deficient number, since it is larger than the sum of its proper divisors (26572454194).

51550560566 is a wasteful number, since it uses less digits than its factorization.

51550560566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265724638.

The product of its (nonzero) digits is 675000, while the sum is 44.

The spelling of 51550560566 in words is "fifty-one billion, five hundred fifty million, five hundred sixty thousand, five hundred sixty-six".