501141121531 has 2 divisors, whose sum is σ = 501141121532. Its totient is φ = 501141121530.

The previous prime is 501141121529. The next prime is 501141121549. The reversal of 501141121531 is 135121141105.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 501141121531 - 2¹ = 501141121529 is a prime.

It is a super-2 number, since 2×501141121531² (a number of 24 digits) contains 22 as substring.

Together with 501141121529, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 501141121496 and 501141121505.

It is not a weakly prime, because it can be changed into another prime (501141121501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250570560765 + 250570560766.

It is an arithmetic number, because the mean of its divisors is an integer number (250570560766).

Almost surely, 2^501141121531 is an apocalyptic number.

501141121531 is a deficient number, since it is larger than the sum of its proper divisors (1).

501141121531 is an equidigital number, since it uses as much as digits as its factorization.

501141121531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600, while the sum is 25.

Adding to 501141121531 its reverse (135121141105), we get a palindrome (636262262636).

The spelling of 501141121531 in words is "five hundred one billion, one hundred forty-one million, one hundred twenty-one thousand, five hundred thirty-one".