216201653 has 2 divisors, whose sum is σ = 216201654. Its totient is φ = 216201652.

The previous prime is 216201607. The next prime is 216201709. The reversal of 216201653 is 356102612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156325009 + 59876644 = 12503^2 + 7738^2 .

It is a cyclic number.

It is not a de Polignac number, because 216201653 - 2¹⁰ = 216200629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216201353) 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 as a sum of consecutive naturals, namely, 108100826 + 108100827.

It is an arithmetic number, because the mean of its divisors is an integer number (108100827).

Almost surely, 2^216201653 is an apocalyptic number.

It is an amenable number.

216201653 is a deficient number, since it is larger than the sum of its proper divisors (1).

216201653 is an equidigital number, since it uses as much as digits as its factorization.

216201653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 216201653 is about 14703.7972306476. The cubic root of 216201653 is about 600.1866576662.

The spelling of 216201653 in words is "two hundred sixteen million, two hundred one thousand, six hundred fifty-three".