51050550220 has 24 divisors (see below), whose sum is σ = 111867293664. Its totient is φ = 19532384256.

The previous prime is 51050550203. The next prime is 51050550241. The reversal of 51050550220 is 2205505015.

It is a happy number.

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, 55489269 + ... + 55490188.

It is an arithmetic number, because the mean of its divisors is an integer number (4661137236).

Almost surely, 2^51050550220 is an apocalyptic number.

It is an amenable number.

51050550220 is an abundant number, since it is smaller than the sum of its proper divisors (60816743444).

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

51050550220 is a wasteful number, since it uses less digits than its factorization.

51050550220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110979489 (or 110979487 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 25.

The spelling of 51050550220 in words is "fifty-one billion, fifty million, five hundred fifty thousand, two hundred twenty".