51512242422 has 16 divisors (see below), whose sum is σ = 107503810560. Its totient is φ = 16424193192.

The previous prime is 51512242417. The next prime is 51512242423. The reversal of 51512242422 is 22424221515.

It is a super-2 number, since 2×51512242422² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51512242422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51512242423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186638422 + ... + 186638697.

It is an arithmetic number, because the mean of its divisors is an integer number (6718988160).

Almost surely, 2^51512242422 is an apocalyptic number.

51512242422 is an abundant number, since it is smaller than the sum of its proper divisors (55991568138).

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

51512242422 is a wasteful number, since it uses less digits than its factorization.

51512242422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373277147.

The product of its digits is 12800, while the sum is 30.

Adding to 51512242422 its reverse (22424221515), we get a palindrome (73936463937).

The spelling of 51512242422 in words is "fifty-one billion, five hundred twelve million, two hundred forty-two thousand, four hundred twenty-two".