51244102500 has 120 divisors (see below), whose sum is σ = 149624354880. Its totient is φ = 13645872000.

The previous prime is 51244102487. The next prime is 51244102501. The reversal of 51244102500 is 520144215.

It is not an unprimeable number, because it can be changed into a prime (51244102501) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5793081 + ... + 5801919.

It is an arithmetic number, because the mean of its divisors is an integer number (1246869624).

Almost surely, 2^51244102500 is an apocalyptic number.

51244102500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51244102500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74812177440).

51244102500 is an abundant number, since it is smaller than the sum of its proper divisors (98380252380).

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

51244102500 is a wasteful number, since it uses less digits than its factorization.

51244102500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9639 (or 9622 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

Adding to 51244102500 its reverse (520144215), we get a palindrome (51764246715).

The spelling of 51244102500 in words is "fifty-one billion, two hundred forty-four million, one hundred two thousand, five hundred".