51927725500 has 144 divisors (see below), whose sum is σ = 132521459616. Its totient is φ = 17723462400.

The previous prime is 51927725497. The next prime is 51927725503. The reversal of 51927725500 is 552772915.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (51927725497) and next prime (51927725503).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51927725503) 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 47 ways as a sum of consecutive naturals, for example, 5556832 + ... + 5566168.

It is an arithmetic number, because the mean of its divisors is an integer number (920287914).

Almost surely, 2^51927725500 is an apocalyptic number.

51927725500 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 51927725500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66260729808).

51927725500 is an abundant number, since it is smaller than the sum of its proper divisors (80593734116).

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

51927725500 is a wasteful number, since it uses less digits than its factorization.

51927725500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9597 (or 9578 counting only the distinct ones).

The product of its (nonzero) digits is 220500, while the sum is 43.

The spelling of 51927725500 in words is "fifty-one billion, nine hundred twenty-seven million, seven hundred twenty-five thousand, five hundred".