5215055051321 has 2 divisors, whose sum is σ = 5215055051322. Its totient is φ = 5215055051320.

The previous prime is 5215055051309. The next prime is 5215055051489. The reversal of 5215055051321 is 1231505505125.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4813021699600 + 402033351721 = 2193860^2 + 634061^2 .

It is a cyclic number.

It is not a de Polignac number, because 5215055051321 - 2¹⁸ = 5215054789177 is a prime.

It is not a weakly prime, because it can be changed into another prime (5215055021321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2607527525660 + 2607527525661.

It is an arithmetic number, because the mean of its divisors is an integer number (2607527525661).

Almost surely, 2^{5215055051321} is an apocalyptic number.

It is an amenable number.

5215055051321 is a deficient number, since it is larger than the sum of its proper divisors (1).

5215055051321 is an equidigital number, since it uses as much as digits as its factorization.

5215055051321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37500, while the sum is 35.

The spelling of 5215055051321 in words is "five trillion, two hundred fifteen billion, fifty-five million, fifty-one thousand, three hundred twenty-one".