531521544541 has 8 divisors (see below), whose sum is σ = 573773951520. Its totient is φ = 489464299632.

The previous prime is 531521544517. The next prime is 531521544557. The reversal of 531521544541 is 145445125135.

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 531521544541 - 2³⁷ = 394082591069 is a prime.

It is a super-2 number, since 2×531521544541² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 531521544494 and 531521544503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531521544581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48784855 + ... + 48795748.

It is an arithmetic number, because the mean of its divisors is an integer number (71721743940).

Almost surely, 2^531521544541 is an apocalyptic number.

It is an amenable number.

531521544541 is a deficient number, since it is larger than the sum of its proper divisors (42252406979).

531521544541 is a wasteful number, since it uses less digits than its factorization.

531521544541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97581035.

The product of its digits is 240000, while the sum is 40.

Adding to 531521544541 its reverse (145445125135), we get a palindrome (676966669676).

The spelling of 531521544541 in words is "five hundred thirty-one billion, five hundred twenty-one million, five hundred forty-four thousand, five hundred forty-one".