51603745730287 has 4 divisors (see below), whose sum is σ = 51605530800040. Its totient is φ = 51601960660536.

The previous prime is 51603745730267. The next prime is 51603745730297. The reversal of 51603745730287 is 78203754730615.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51603745730287 is a prime.

It is a super-2 number, since 2×51603745730287² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51603745730227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 892491513 + ... + 892549330.

It is an arithmetic number, because the mean of its divisors is an integer number (12901382700010).

Almost surely, 2^{51603745730287} is an apocalyptic number.

51603745730287 is a deficient number, since it is larger than the sum of its proper divisors (1785069753).

51603745730287 is a wasteful number, since it uses less digits than its factorization.

51603745730287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1785069752.

The product of its (nonzero) digits is 29635200, while the sum is 58.

The spelling of 51603745730287 in words is "fifty-one trillion, six hundred three billion, seven hundred forty-five million, seven hundred thirty thousand, two hundred eighty-seven".