4216505 has 4 divisors (see below), whose sum is σ = 5059812. Its totient is φ = 3373200.

The previous prime is 4216501. The next prime is 4216507. The reversal of 4216505 is 5056124.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1817104 + 2399401 = 1348^2 + 1549^2 .

It is not a de Polignac number, because 4216505 - 2² = 4216501 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4216501) 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, 421646 + ... + 421655.

It is an arithmetic number, because the mean of its divisors is an integer number (1264953).

Almost surely, 2^4216505 is an apocalyptic number.

It is an amenable number.

4216505 is a deficient number, since it is larger than the sum of its proper divisors (843307).

4216505 is an equidigital number, since it uses as much as digits as its factorization.

4216505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843306.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 4216505 is about 2053.4130125233. The cubic root of 4216505 is about 161.5539347060.

The spelling of 4216505 in words is "four million, two hundred sixteen thousand, five hundred five".