215665283 has 2 divisors, whose sum is σ = 215665284. Its totient is φ = 215665282.

The previous prime is 215665259. The next prime is 215665313. The reversal of 215665283 is 382566512.

215665283 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 215665283 - 2¹⁰ = 215664259 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (215665223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107832641 + 107832642.

It is an arithmetic number, because the mean of its divisors is an integer number (107832642).

Almost surely, 2^215665283 is an apocalyptic number.

215665283 is a deficient number, since it is larger than the sum of its proper divisors (1).

215665283 is an equidigital number, since it uses as much as digits as its factorization.

215665283 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 38.

The square root of 215665283 is about 14685.5467382049. The cubic root of 215665283 is about 599.6899166266.

The spelling of 215665283 in words is "two hundred fifteen million, six hundred sixty-five thousand, two hundred eighty-three".