506531061281 has 16 divisors (see below), whose sum is σ = 591296993280. Its totient is φ = 424868951760.

The previous prime is 506531061259. The next prime is 506531061301. The reversal of 506531061281 is 182160135605.

It is a cyclic number.

It is not a de Polignac number, because 506531061281 - 2³⁰ = 505457319457 is a prime.

It is a super-2 number, since 2×506531061281² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (506531091281) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2183030 + ... + 2403888.

It is an arithmetic number, because the mean of its divisors is an integer number (36956062080).

Almost surely, 2^506531061281 is an apocalyptic number.

It is an amenable number.

506531061281 is a deficient number, since it is larger than the sum of its proper divisors (84765931999).

506531061281 is a wasteful number, since it uses less digits than its factorization.

506531061281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227884.

The product of its (nonzero) digits is 43200, while the sum is 38.

Adding to 506531061281 its reverse (182160135605), we get a palindrome (688691196886).

The spelling of 506531061281 in words is "five hundred six billion, five hundred thirty-one million, sixty-one thousand, two hundred eighty-one".