52131000440 has 16 divisors (see below), whose sum is σ = 117294751080. Its totient is φ = 20852400160.

The previous prime is 52131000413. The next prime is 52131000443. The reversal of 52131000440 is 4400013125.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52131000443) 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 3 ways as a sum of consecutive naturals, for example, 651637466 + ... + 651637545.

Almost surely, 2^52131000440 is an apocalyptic number.

It is an amenable number.

52131000440 is an abundant number, since it is smaller than the sum of its proper divisors (65163750640).

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

52131000440 is a wasteful number, since it uses less digits than its factorization.

52131000440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303275022 (or 1303275018 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 52131000440 its reverse (4400013125), we get a palindrome (56531013565).

The spelling of 52131000440 in words is "fifty-two billion, one hundred thirty-one million, four hundred forty", and thus it is an aban number.