215065093 has 2 divisors, whose sum is σ = 215065094. Its totient is φ = 215065092.

The previous prime is 215065087. The next prime is 215065139. The reversal of 215065093 is 390560512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172580769 + 42484324 = 13137^2 + 6518^2 .

It is a cyclic number.

It is not a de Polignac number, because 215065093 - 2⁵ = 215065061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215065003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107532546 + 107532547.

It is an arithmetic number, because the mean of its divisors is an integer number (107532547).

Almost surely, 2^215065093 is an apocalyptic number.

It is an amenable number.

215065093 is a deficient number, since it is larger than the sum of its proper divisors (1).

215065093 is an equidigital number, since it uses as much as digits as its factorization.

215065093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 215065093 is about 14665.0977835131. The cubic root of 215065093 is about 599.1330934286.

The spelling of 215065093 in words is "two hundred fifteen million, sixty-five thousand, ninety-three".