216480571 has 2 divisors, whose sum is σ = 216480572. Its totient is φ = 216480570.

The previous prime is 216480557. The next prime is 216480611. The reversal of 216480571 is 175084612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216480571 - 2¹¹ = 216478523 is a prime.

It is not a weakly prime, because it can be changed into another prime (216480371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108240285 + 108240286.

It is an arithmetic number, because the mean of its divisors is an integer number (108240286).

Almost surely, 2^216480571 is an apocalyptic number.

216480571 is a deficient number, since it is larger than the sum of its proper divisors (1).

216480571 is an equidigital number, since it uses as much as digits as its factorization.

216480571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 216480571 is about 14713.2787304530. The cubic root of 216480571 is about 600.4446435536. Note that the first 3 decimals are identical.

The spelling of 216480571 in words is "two hundred sixteen million, four hundred eighty thousand, five hundred seventy-one".