216241563 has 4 divisors (see below), whose sum is σ = 288322088. Its totient is φ = 144161040.

The previous prime is 216241517. The next prime is 216241577. The reversal of 216241563 is 365142612.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 216241563 - 2¹³ = 216233371 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 216241563.

It is not an unprimeable number, because it can be changed into a prime (216241463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36040258 + ... + 36040263.

It is an arithmetic number, because the mean of its divisors is an integer number (72080522).

Almost surely, 2^216241563 is an apocalyptic number.

216241563 is a deficient number, since it is larger than the sum of its proper divisors (72080525).

216241563 is an equidigital number, since it uses as much as digits as its factorization.

216241563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72080524.

The product of its digits is 8640, while the sum is 30.

The square root of 216241563 is about 14705.1543004485. The cubic root of 216241563 is about 600.2235861162.

The spelling of 216241563 in words is "two hundred sixteen million, two hundred forty-one thousand, five hundred sixty-three".