521230503005 has 16 divisors (see below), whose sum is σ = 625943352240. Its totient is φ = 416673374208.

The previous prime is 521230502981. The next prime is 521230503007. The reversal of 521230503005 is 500305032125.

It can be written as a sum of positive squares in 8 ways, for example, as 13919044441 + 507311458564 = 117979^2 + 712258^2 .

It is a cyclic number.

It is not a de Polignac number, because 521230503005 - 2²⁰ = 521229454429 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521230503007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47495699 + ... + 47506671.

It is an arithmetic number, because the mean of its divisors is an integer number (39121459515).

Almost surely, 2^521230503005 is an apocalyptic number.

It is an amenable number.

521230503005 is a deficient number, since it is larger than the sum of its proper divisors (104712849235).

521230503005 is a wasteful number, since it uses less digits than its factorization.

521230503005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17200.

The product of its (nonzero) digits is 4500, while the sum is 26.

The spelling of 521230503005 in words is "five hundred twenty-one billion, two hundred thirty million, five hundred three thousand, five".