51105110550 has 48 divisors (see below), whose sum is σ = 136489962000. Its totient is φ = 12579719040.

The previous prime is 51105110533. The next prime is 51105110561. The reversal of 51105110550 is 5501150115.

It is a super-2 number, since 2×51105110550² (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 51105110550.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13101925 + ... + 13105824.

It is an arithmetic number, because the mean of its divisors is an integer number (2843540875).

Almost surely, 2^51105110550 is an apocalyptic number.

51105110550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51105110550 is an abundant number, since it is smaller than the sum of its proper divisors (85384851450).

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

51105110550 is a wasteful number, since it uses less digits than its factorization.

51105110550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26207777 (or 26207772 counting only the distinct ones).

The product of its (nonzero) digits is 625, while the sum is 24.

Adding to 51105110550 its reverse (5501150115), we get a palindrome (56606260665).

The spelling of 51105110550 in words is "fifty-one billion, one hundred five million, one hundred ten thousand, five hundred fifty".