531540544451 has 8 divisors (see below), whose sum is σ = 639447271680. Its totient is φ = 431626908168.

The previous prime is 531540544427. The next prime is 531540544459. The reversal of 531540544451 is 154445045135.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 531540544451 - 2¹⁸ = 531540282307 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 531540544399 and 531540544408.

It is not an unprimeable number, because it can be changed into a prime (531540544459) 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 7 ways as a sum of consecutive naturals, for example, 1998272591 + ... + 1998272856.

It is an arithmetic number, because the mean of its divisors is an integer number (79930908960).

Almost surely, 2^531540544451 is an apocalyptic number.

531540544451 is a deficient number, since it is larger than the sum of its proper divisors (107906727229).

531540544451 is a wasteful number, since it uses less digits than its factorization.

531540544451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3996545473.

The product of its (nonzero) digits is 480000, while the sum is 41.

Adding to 531540544451 its reverse (154445045135), we get a palindrome (685985589586).

The spelling of 531540544451 in words is "five hundred thirty-one billion, five hundred forty million, five hundred forty-four thousand, four hundred fifty-one".