51103055544 has 64 divisors (see below), whose sum is σ = 128390538240. Its totient is φ = 16950140160.

The previous prime is 51103055543. The next prime is 51103055569. The reversal of 51103055544 is 44555030115.

It is a super-2 number, since 2×51103055544² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51103055543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5163769 + ... + 5173655.

It is an arithmetic number, because the mean of its divisors is an integer number (2006102160).

Almost surely, 2^51103055544 is an apocalyptic number.

It is an amenable number.

51103055544 is an abundant number, since it is smaller than the sum of its proper divisors (77287482696).

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

51103055544 is a wasteful number, since it uses less digits than its factorization.

51103055544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10940 (or 10936 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 33.

Adding to 51103055544 its reverse (44555030115), we get a palindrome (95658085659).

The spelling of 51103055544 in words is "fifty-one billion, one hundred three million, fifty-five thousand, five hundred forty-four".