51553034303 has 4 divisors (see below), whose sum is σ = 51946569048. Its totient is φ = 51159499560.

The previous prime is 51553034297. The next prime is 51553034339. The reversal of 51553034303 is 30343035515.

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-51553034303 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 51553034303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51553034363) 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, 196767176 + ... + 196767437.

It is an arithmetic number, because the mean of its divisors is an integer number (12986642262).

Almost surely, 2^51553034303 is an apocalyptic number.

51553034303 is a deficient number, since it is larger than the sum of its proper divisors (393534745).

51553034303 is a wasteful number, since it uses less digits than its factorization.

51553034303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393534744.

The product of its (nonzero) digits is 40500, while the sum is 32.

Adding to 51553034303 its reverse (30343035515), we get a palindrome (81896069818).

The spelling of 51553034303 in words is "fifty-one billion, five hundred fifty-three million, thirty-four thousand, three hundred three".