51055560105 has 16 divisors (see below), whose sum is σ = 89115159744. Its totient is φ = 24754210880.

The previous prime is 51055560013. The next prime is 51055560107. The reversal of 51055560105 is 50106555015.

It is not a de Polignac number, because 51055560105 - 2³³ = 42465625513 is a prime.

It is a super-2 number, since 2×51055560105² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (51055560107) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 154713654 + ... + 154713983.

It is an arithmetic number, because the mean of its divisors is an integer number (5569697484).

Almost surely, 2^51055560105 is an apocalyptic number.

51055560105 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51055560105 is a deficient number, since it is larger than the sum of its proper divisors (38059599639).

51055560105 is a wasteful number, since it uses less digits than its factorization.

51055560105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309427656.

The product of its (nonzero) digits is 18750, while the sum is 33.

The spelling of 51055560105 in words is "fifty-one billion, fifty-five million, five hundred sixty thousand, one hundred five".