513521060105531 has 2 divisors, whose sum is σ = 513521060105532. Its totient is φ = 513521060105530.

The previous prime is 513521060105489. The next prime is 513521060105591. The reversal of 513521060105531 is 135501060125315.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 513521060105531 - 2⁴² = 509123013594427 is a prime.

It is a super-2 number, since 2×513521060105531² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (513521060105591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256760530052765 + 256760530052766.

It is an arithmetic number, because the mean of its divisors is an integer number (256760530052766).

Almost surely, 2^{513521060105531} is an apocalyptic number.

513521060105531 is a deficient number, since it is larger than the sum of its proper divisors (1).

513521060105531 is an equidigital number, since it uses as much as digits as its factorization.

513521060105531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67500, while the sum is 38.

The spelling of 513521060105531 in words is "five hundred thirteen trillion, five hundred twenty-one billion, sixty million, one hundred five thousand, five hundred thirty-one".