216453297 has 8 divisors (see below), whose sum is σ = 289392256. Its totient is φ = 143908272.

The previous prime is 216453277. The next prime is 216453313. The reversal of 216453297 is 792354612.

216453297 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 216453297 - 2⁷ = 216453169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216453257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97198 + ... + 99399.

It is an arithmetic number, because the mean of its divisors is an integer number (36174032).

Almost surely, 2^216453297 is an apocalyptic number.

It is an amenable number.

216453297 is a deficient number, since it is larger than the sum of its proper divisors (72938959).

216453297 is a wasteful number, since it uses less digits than its factorization.

216453297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196967.

The product of its digits is 90720, while the sum is 39.

The square root of 216453297 is about 14712.3518514206. The cubic root of 216453297 is about 600.4194261789.

It can be divided in two parts, 21645 and 3297, that added together give a palindrome (24942).

The spelling of 216453297 in words is "two hundred sixteen million, four hundred fifty-three thousand, two hundred ninety-seven".