216324501 has 8 divisors (see below), whose sum is σ = 288595104. Its totient is φ = 144135120.

The previous prime is 216324497. The next prime is 216324539. The reversal of 216324501 is 105423612.

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

It is not a de Polignac number, because 216324501 - 2² = 216324497 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216324551) 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, 13791 + ... + 24956.

It is an arithmetic number, because the mean of its divisors is an integer number (36074388).

Almost surely, 2^216324501 is an apocalyptic number.

It is an amenable number.

216324501 is a deficient number, since it is larger than the sum of its proper divisors (72270603).

216324501 is a wasteful number, since it uses less digits than its factorization.

216324501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40611.

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

The square root of 216324501 is about 14707.9740617122. The cubic root of 216324501 is about 600.3003135501.

The spelling of 216324501 in words is "two hundred sixteen million, three hundred twenty-four thousand, five hundred one".