216253519 has 2 divisors, whose sum is σ = 216253520. Its totient is φ = 216253518.

The previous prime is 216253517. The next prime is 216253537. The reversal of 216253519 is 915352612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216253519 - 2¹ = 216253517 is a prime.

It is a super-2 number, since 2×216253519² = 93531168959766722, which contains 22 as substring.

Together with 216253517, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216253511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108126759 + 108126760.

It is an arithmetic number, because the mean of its divisors is an integer number (108126760).

Almost surely, 2^216253519 is an apocalyptic number.

216253519 is a deficient number, since it is larger than the sum of its proper divisors (1).

216253519 is an equidigital number, since it uses as much as digits as its factorization.

216253519 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 34.

The square root of 216253519 is about 14705.5608189555. The cubic root of 216253519 is about 600.2346480367.

The spelling of 216253519 in words is "two hundred sixteen million, two hundred fifty-three thousand, five hundred nineteen".