215534983 has 2 divisors, whose sum is σ = 215534984. Its totient is φ = 215534982.

The previous prime is 215534947. The next prime is 215535011. The reversal of 215534983 is 389435512.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 215534983 - 2¹⁷ = 215403911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215534923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107767491 + 107767492.

It is an arithmetic number, because the mean of its divisors is an integer number (107767492).

Almost surely, 2^215534983 is an apocalyptic number.

215534983 is a deficient number, since it is larger than the sum of its proper divisors (1).

215534983 is an equidigital number, since it uses as much as digits as its factorization.

215534983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 40.

The square root of 215534983 is about 14681.1097332593. The cubic root of 215534983 is about 599.5691193475.

The spelling of 215534983 in words is "two hundred fifteen million, five hundred thirty-four thousand, nine hundred eighty-three".