531441144550 has 48 divisors (see below), whose sum is σ = 991945440000. Its totient is φ = 211832180000.

The previous prime is 531441144541. The next prime is 531441144587. The reversal of 531441144550 is 55441144135.

It is a super-2 number, since 2×531441144550² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26897175 + ... + 26916925.

It is an arithmetic number, because the mean of its divisors is an integer number (20665530000).

Almost surely, 2^531441144550 is an apocalyptic number.

531441144550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

531441144550 is a deficient number, since it is larger than the sum of its proper divisors (460504295450).

531441144550 is a wasteful number, since it uses less digits than its factorization.

531441144550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21621 (or 21616 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 37.

Adding to 531441144550 its reverse (55441144135), we get a palindrome (586882288685).

The spelling of 531441144550 in words is "five hundred thirty-one billion, four hundred forty-one million, one hundred forty-four thousand, five hundred fifty".