51603560056 has 64 divisors (see below), whose sum is σ = 101579385600. Its totient is φ = 24548832000.

The previous prime is 51603560051. The next prime is 51603560069. The reversal of 51603560056 is 65006530615.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 51603559997 and 51603560024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51603560051) 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 15 ways as a sum of consecutive naturals, for example, 10420381 + ... + 10425331.

It is an arithmetic number, because the mean of its divisors is an integer number (1587177900).

Almost surely, 2^51603560056 is an apocalyptic number.

It is an amenable number.

51603560056 is a deficient number, since it is larger than the sum of its proper divisors (49975825544).

51603560056 is a wasteful number, since it uses less digits than its factorization.

51603560056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5780 (or 5776 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 37.

The spelling of 51603560056 in words is "fifty-one billion, six hundred three million, five hundred sixty thousand, fifty-six".