531021451541 has 12 divisors (see below), whose sum is σ = 644680519008. Its totient is φ = 428387051712.

The previous prime is 531021451537. The next prime is 531021451549. The reversal of 531021451541 is 145154120135.

It is not a de Polignac number, because 531021451541 - 2² = 531021451537 is a prime.

It is a super-2 number, since 2×531021451541² (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 = 531021451498 and 531021451507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531021451549) 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 11 ways as a sum of consecutive naturals, for example, 131244011 + ... + 131248056.

It is an arithmetic number, because the mean of its divisors is an integer number (53723376584).

Almost surely, 2^531021451541 is an apocalyptic number.

It is an amenable number.

531021451541 is a deficient number, since it is larger than the sum of its proper divisors (113659067467).

531021451541 is a wasteful number, since it uses less digits than its factorization.

531021451541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262492108 (or 262492091 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 32.

Adding to 531021451541 its reverse (145154120135), we get a palindrome (676175571676).

The spelling of 531021451541 in words is "five hundred thirty-one billion, twenty-one million, four hundred fifty-one thousand, five hundred forty-one".