531226561541 has 8 divisors (see below), whose sum is σ = 574042673400. Its totient is φ = 488689382592.

The previous prime is 531226561531. The next prime is 531226561603. The reversal of 531226561541 is 145165622135.

It can be written as a sum of positive squares in 4 ways, for example, as 65099481316 + 466127080225 = 255146^2 + 682735^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-531226561541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531226561531) 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, 69729266 + ... + 69736883.

It is an arithmetic number, because the mean of its divisors is an integer number (71755334175).

Almost surely, 2^531226561541 is an apocalyptic number.

It is an amenable number.

531226561541 is a deficient number, since it is larger than the sum of its proper divisors (42816111859).

531226561541 is a wasteful number, since it uses less digits than its factorization.

531226561541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139466455.

The product of its digits is 216000, while the sum is 41.

The spelling of 531226561541 in words is "five hundred thirty-one billion, two hundred twenty-six million, five hundred sixty-one thousand, five hundred forty-one".