51155254422 has 24 divisors (see below), whose sum is σ = 111542354976. Its totient is φ = 16943140656.

The previous prime is 51155254399. The next prime is 51155254427. The reversal of 51155254422 is 22445255115.

51155254422 is a `hidden beast` number, since 5 + 11 + 552 + 54 + 42 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51155254427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9047998 + ... + 9053649.

It is an arithmetic number, because the mean of its divisors is an integer number (4647598124).

Almost surely, 2^51155254422 is an apocalyptic number.

51155254422 is an abundant number, since it is smaller than the sum of its proper divisors (60387100554).

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

51155254422 is a wasteful number, since it uses less digits than its factorization.

51155254422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18101812 (or 18101809 counting only the distinct ones).

The product of its digits is 80000, while the sum is 36.

The spelling of 51155254422 in words is "fifty-one billion, one hundred fifty-five million, two hundred fifty-four thousand, four hundred twenty-two".