51922531250 has 42 divisors (see below), whose sum is σ = 97429084923. Its totient is φ = 20752900000.

The previous prime is 51922531139. The next prime is 51922531259. The reversal of 51922531250 is 5213522915.

It can be written as a sum of positive squares in 11 ways, for example, as 30594557569 + 21327973681 = 174913^2 + 146041^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=161125.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 51922531250.

It is not an unprimeable number, because it can be changed into a prime (51922531259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 40280606 + ... + 40281894.

Almost surely, 2^51922531250 is an apocalyptic number.

51922531250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51922531250 is a deficient number, since it is larger than the sum of its proper divisors (45506553673).

51922531250 is an frugal number, since it uses more digits than its factorization.

51922531250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2610 (or 1296 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 35.

The spelling of 51922531250 in words is "fifty-one billion, nine hundred twenty-two million, five hundred thirty-one thousand, two hundred fifty".