52531450000 has 120 divisors (see below), whose sum is σ = 127972887336. Its totient is φ = 20887680000.

The previous prime is 52531449973. The next prime is 52531450007. The reversal of 52531450000 is 5413525.

It can be written as a sum of positive squares in 12 ways, for example, as 39738030336 + 12793419664 = 199344^2 + 113108^2 .

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

It is not an unprimeable number, because it can be changed into a prime (52531450007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8646964 + ... + 8653036.

Almost surely, 2^52531450000 is an apocalyptic number.

52531450000 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 52531450000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63986443668).

52531450000 is an abundant number, since it is smaller than the sum of its proper divisors (75441437336).

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

52531450000 is an equidigital number, since it uses as much as digits as its factorization.

52531450000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6279 (or 6253 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

Adding to 52531450000 its reverse (5413525), we get a palindrome (52536863525).

The spelling of 52531450000 in words is "fifty-two billion, five hundred thirty-one million, four hundred fifty thousand".