51304422220 has 48 divisors (see below), whose sum is σ = 108376617888. Its totient is φ = 20400675840.

The previous prime is 51304422137. The next prime is 51304422223. The reversal of 51304422220 is 2222440315.

It is not an unprimeable number, because it can be changed into a prime (51304422223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2820274 + ... + 2838406.

It is an arithmetic number, because the mean of its divisors is an integer number (2257846206).

Almost surely, 2^51304422220 is an apocalyptic number.

It is an amenable number.

51304422220 is an abundant number, since it is smaller than the sum of its proper divisors (57072195668).

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

51304422220 is a wasteful number, since it uses less digits than its factorization.

51304422220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18970 (or 18968 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 51304422220 its reverse (2222440315), we get a palindrome (53526862535).

The spelling of 51304422220 in words is "fifty-one billion, three hundred four million, four hundred twenty-two thousand, two hundred twenty".