216104253 has 4 divisors (see below), whose sum is σ = 288139008. Its totient is φ = 144069500.

The previous prime is 216104237. The next prime is 216104257. The reversal of 216104253 is 352401612.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 216104253 - 2⁴ = 216104237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216104257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36017373 + ... + 36017378.

It is an arithmetic number, because the mean of its divisors is an integer number (72034752).

Almost surely, 2^216104253 is an apocalyptic number.

It is an amenable number.

216104253 is a deficient number, since it is larger than the sum of its proper divisors (72034755).

216104253 is an equidigital number, since it uses as much as digits as its factorization.

216104253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72034754.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 216104253 is about 14700.4847879245. The cubic root of 216104253 is about 600.0965150295.

Adding to 216104253 its reverse (352401612), we get a palindrome (568505865).

The spelling of 216104253 in words is "two hundred sixteen million, one hundred four thousand, two hundred fifty-three".