216024551 has 2 divisors, whose sum is σ = 216024552. Its totient is φ = 216024550.

The previous prime is 216024517. The next prime is 216024553. The reversal of 216024551 is 155420612.

216024551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216024551 - 2²⁶ = 148915687 is a prime.

Together with 216024553, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 216024551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216024553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108012275 + 108012276.

It is an arithmetic number, because the mean of its divisors is an integer number (108012276).

Almost surely, 2^216024551 is an apocalyptic number.

216024551 is a deficient number, since it is larger than the sum of its proper divisors (1).

216024551 is an equidigital number, since it uses as much as digits as its factorization.

216024551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 216024551 is about 14697.7736749482. The cubic root of 216024551 is about 600.0227315462.

The spelling of 216024551 in words is "two hundred sixteen million, twenty-four thousand, five hundred fifty-one".