53251000000 has 392 divisors, whose sum is σ = 148588098048. Its totient is φ = 18768000000.

The previous prime is 53250999943. The next prime is 53251000001. The reversal of 53251000000 is 15235.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (53251000001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 516999949 + ... + 517000051.

Almost surely, 2^53251000000 is an apocalyptic number.

53251000000 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 53251000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74294049024).

53251000000 is an abundant number, since it is smaller than the sum of its proper divisors (95337098048).

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

53251000000 is an equidigital number, since it uses as much as digits as its factorization.

53251000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 16.

Adding to 53251000000 its reverse (15235), we get a palindrome (53251015235).

The spelling of 53251000000 in words is "fifty-three billion, two hundred fifty-one million", and thus it is an aban number.