2015008321 has 2 divisors, whose sum is σ = 2015008322. Its totient is φ = 2015008320.

The previous prime is 2015008319. The next prime is 2015008361. The reversal of 2015008321 is 1238005102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1938200625 + 76807696 = 44025^2 + 8764^2 .

It is a cyclic number.

It is not a de Polignac number, because 2015008321 - 2¹ = 2015008319 is a prime.

Together with 2015008319, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2015008292 and 2015008301.

It is not a weakly prime, because it can be changed into another prime (2015008301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1007504160 + 1007504161.

It is an arithmetic number, because the mean of its divisors is an integer number (1007504161).

Almost surely, 2^2015008321 is an apocalyptic number.

It is an amenable number.

2015008321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2015008321 is an equidigital number, since it uses as much as digits as its factorization.

2015008321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 2015008321 is about 44888.8440595211. The cubic root of 2015008321 is about 1263.0647492762.

The spelling of 2015008321 in words is "two billion, fifteen million, eight thousand, three hundred twenty-one".