51512251422 has 16 divisors (see below), whose sum is σ = 103082176512. Its totient is φ = 17161138200.

The previous prime is 51512251397. The next prime is 51512251459. The reversal of 51512251422 is 22415221515.

It is a super-3 number, since 3×51512251422³ (a number of 33 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51512251422.

It is a congruent 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, 2391454 + ... + 2412897.

It is an arithmetic number, because the mean of its divisors is an integer number (6442636032).

Almost surely, 2^51512251422 is an apocalyptic number.

51512251422 is an abundant number, since it is smaller than the sum of its proper divisors (51569925090).

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

51512251422 is a wasteful number, since it uses less digits than its factorization.

51512251422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4806143.

The product of its digits is 8000, while the sum is 30.

Adding to 51512251422 its reverse (22415221515), we get a palindrome (73927472937).

The spelling of 51512251422 in words is "fifty-one billion, five hundred twelve million, two hundred fifty-one thousand, four hundred twenty-two".