51244501300 has 72 divisors (see below), whose sum is σ = 112515532920. Its totient is φ = 20256192000.

The previous prime is 51244501201. The next prime is 51244501339. The reversal of 51244501300 is 310544215.

It is a happy number.

51244501300 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 12 ways, for example, as 21537910564 + 29706590736 = 146758^2 + 172356^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5621146 + ... + 5630254.

It is an arithmetic number, because the mean of its divisors is an integer number (1562715735).

Almost surely, 2^51244501300 is an apocalyptic number.

51244501300 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 51244501300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56257766460).

51244501300 is an abundant number, since it is smaller than the sum of its proper divisors (61271031620).

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

51244501300 is a wasteful number, since it uses less digits than its factorization.

51244501300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9781 (or 9774 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The spelling of 51244501300 in words is "fifty-one billion, two hundred forty-four million, five hundred one thousand, three hundred".