216510083 has 2 divisors, whose sum is σ = 216510084. Its totient is φ = 216510082.

The previous prime is 216510013. The next prime is 216510097. The reversal of 216510083 is 380015612.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216510083 is a prime.

It is not a weakly prime, because it can be changed into another prime (216510013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108255041 + 108255042.

It is an arithmetic number, because the mean of its divisors is an integer number (108255042).

Almost surely, 2^216510083 is an apocalyptic number.

216510083 is a deficient number, since it is larger than the sum of its proper divisors (1).

216510083 is an equidigital number, since it uses as much as digits as its factorization.

216510083 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 216510083 is about 14714.2815998607. The cubic root of 216510083 is about 600.4719277837.

Adding to 216510083 its reverse (380015612), we get a palindrome (596525695).

The spelling of 216510083 in words is "two hundred sixteen million, five hundred ten thousand, eighty-three".