531315054550 has 48 divisors (see below), whose sum is σ = 1150733928672. Its totient is φ = 178728076800.

The previous prime is 531315054527. The next prime is 531315054551. The reversal of 531315054550 is 55450513135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531315054551) 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, 14302611 + ... + 14339710.

It is an arithmetic number, because the mean of its divisors is an integer number (23973623514).

Almost surely, 2^531315054550 is an apocalyptic number.

531315054550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

531315054550 is an abundant number, since it is smaller than the sum of its proper divisors (619418874122).

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

531315054550 is a wasteful number, since it uses less digits than its factorization.

531315054550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28642393 (or 28642388 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 37.

Adding to 531315054550 its reverse (55450513135), we get a palindrome (586765567685).

The spelling of 531315054550 in words is "five hundred thirty-one billion, three hundred fifteen million, fifty-four thousand, five hundred fifty".