51550025022 has 20 divisors (see below), whose sum is σ = 115510241616. Its totient is φ = 17183341620.

The previous prime is 51550024991. The next prime is 51550025027. The reversal of 51550025022 is 22052005515.

51550025022 is a `hidden beast` number, since 5 + 155 + 0 + 0 + 2 + 502 + 2 = 666.

51550025022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51550025022² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51550025027) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 159104854 + ... + 159105177.

Almost surely, 2^51550025022 is an apocalyptic number.

51550025022 is an abundant number, since it is smaller than the sum of its proper divisors (63960216594).

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

51550025022 is a wasteful number, since it uses less digits than its factorization.

51550025022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318210045 (or 318210036 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The spelling of 51550025022 in words is "fifty-one billion, five hundred fifty million, twenty-five thousand, twenty-two".