531245335400 has 96 divisors (see below), whose sum is σ = 1330514945760. Its totient is φ = 196099280640.

The previous prime is 531245335391. The next prime is 531245335451. The reversal of 531245335400 is 4533542135.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10382279 + ... + 10433321.

It is an arithmetic number, because the mean of its divisors is an integer number (13859530685).

Almost surely, 2^531245335400 is an apocalyptic number.

531245335400 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 531245335400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (665257472880).

531245335400 is an abundant number, since it is smaller than the sum of its proper divisors (799269610360).

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

531245335400 is a wasteful number, since it uses less digits than its factorization.

531245335400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55075 (or 55066 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 35.

Adding to 531245335400 its reverse (4533542135), we get a palindrome (535778877535).

The spelling of 531245335400 in words is "five hundred thirty-one billion, two hundred forty-five million, three hundred thirty-five thousand, four hundred".