51105112530 has 64 divisors (see below), whose sum is σ = 131996158848. Its totient is φ = 12616104960.

The previous prime is 51105112517. The next prime is 51105112537. The reversal of 51105112530 is 3521150115.

It is a super-2 number, since 2×51105112530² (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 51105112530.

It is not an unprimeable number, because it can be changed into a prime (51105112537) 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 31 ways as a sum of consecutive naturals, for example, 790252 + ... + 852471.

It is an arithmetic number, because the mean of its divisors is an integer number (2062439982).

Almost surely, 2^51105112530 is an apocalyptic number.

51105112530 is an abundant number, since it is smaller than the sum of its proper divisors (80891046318).

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

51105112530 is a wasteful number, since it uses less digits than its factorization.

51105112530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1642811.

The product of its (nonzero) digits is 750, while the sum is 24.

Adding to 51105112530 its reverse (3521150115), we get a palindrome (54626262645).

The spelling of 51105112530 in words is "fifty-one billion, one hundred five million, one hundred twelve thousand, five hundred thirty".