521322673255055 has 24 divisors (see below), whose sum is σ = 727726446252000. Its totient is φ = 357477151227840.

The previous prime is 521322673254991. The next prime is 521322673255093. The reversal of 521322673255055 is 550552376223125.

It is not a de Polignac number, because 521322673255055 - 2⁶ = 521322673254991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 521322673254988 and 521322673255006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69198446 + ... + 76361444.

It is an arithmetic number, because the mean of its divisors is an integer number (30321935260500).

Almost surely, 2^{521322673255055} is an apocalyptic number.

521322673255055 is a deficient number, since it is larger than the sum of its proper divisors (206403772996945).

521322673255055 is a wasteful number, since it uses less digits than its factorization.

521322673255055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7460079 (or 7460072 counting only the distinct ones).

The product of its (nonzero) digits is 18900000, while the sum is 53.

The spelling of 521322673255055 in words is "five hundred twenty-one trillion, three hundred twenty-two billion, six hundred seventy-three million, two hundred fifty-five thousand, fifty-five".