51022440520 has 32 divisors (see below), whose sum is σ = 115383252600. Its totient is φ = 20305374208.

The previous prime is 51022440509. The next prime is 51022440559. The reversal of 51022440520 is 2504422015.

It can be written as a sum of positive squares in 4 ways, for example, as 39070266244 + 11952174276 = 197662^2 + 109326^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3229585 + ... + 3245344.

Almost surely, 2^51022440520 is an apocalyptic number.

It is an amenable number.

51022440520 is an abundant number, since it is smaller than the sum of its proper divisors (64360812080).

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

51022440520 is a wasteful number, since it uses less digits than its factorization.

51022440520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6475137 (or 6475133 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

Adding to 51022440520 its reverse (2504422015), we get a palindrome (53526862535).

The spelling of 51022440520 in words is "fifty-one billion, twenty-two million, four hundred forty thousand, five hundred twenty".