51255302112 has 144 divisors (see below), whose sum is σ = 167892221952. Its totient is φ = 14528989440.

The previous prime is 51255302099. The next prime is 51255302113. The reversal of 51255302112 is 21120355215.

51255302112 is a `hidden beast` number, since 5 + 12 + 5 + 530 + 2 + 112 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51255302113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 155937 + ... + 356127.

It is an arithmetic number, because the mean of its divisors is an integer number (1165918208).

Almost surely, 2^51255302112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51255302112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83946110976).

51255302112 is an abundant number, since it is smaller than the sum of its proper divisors (116636919840).

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

51255302112 is a wasteful number, since it uses less digits than its factorization.

51255302112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200341 (or 200330 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

Adding to 51255302112 its reverse (21120355215), we get a palindrome (72375657327).

The spelling of 51255302112 in words is "fifty-one billion, two hundred fifty-five million, three hundred two thousand, one hundred twelve".