51553034320 has 40 divisors (see below), whose sum is σ = 120133918080. Its totient is φ = 20574226560.

The previous prime is 51553034297. The next prime is 51553034339. The reversal of 51553034320 is 2343035515.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 698836 + ... + 769075.

It is an arithmetic number, because the mean of its divisors is an integer number (3003347952).

Almost surely, 2^51553034320 is an apocalyptic number.

It is an amenable number.

51553034320 is an abundant number, since it is smaller than the sum of its proper divisors (68580883760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51553034320 is a wasteful number, since it uses less digits than its factorization.

51553034320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1468363 (or 1468357 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 31.

Adding to 51553034320 its reverse (2343035515), we get a palindrome (53896069835).

The spelling of 51553034320 in words is "fifty-one billion, five hundred fifty-three million, thirty-four thousand, three hundred twenty".