51301253000 has 64 divisors (see below), whose sum is σ = 120122870400. Its totient is φ = 20507179200.

The previous prime is 51301252991. The next prime is 51301253021. The reversal of 51301253000 is 35210315.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1603157 + ... + 1634843.

It is an arithmetic number, because the mean of its divisors is an integer number (1876919850).

Almost surely, 2^51301253000 is an apocalyptic number.

51301253000 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 51301253000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60061435200).

51301253000 is an abundant number, since it is smaller than the sum of its proper divisors (68821617400).

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

51301253000 is a wasteful number, since it uses less digits than its factorization.

51301253000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33327 (or 33313 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 20.

Adding to 51301253000 its reverse (35210315), we get a palindrome (51336463315).

The spelling of 51301253000 in words is "fifty-one billion, three hundred one million, two hundred fifty-three thousand".