2216145 has 8 divisors (see below), whose sum is σ = 3545856. Its totient is φ = 1181936.

The previous prime is 2216143. The next prime is 2216153. The reversal of 2216145 is 5416122.

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

It is a cyclic number.

It is not a de Polignac number, because 2216145 - 2¹ = 2216143 is a prime.

It is a super-2 number, since 2×2216145² = 9822597322050, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2216143) 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, 73857 + ... + 73886.

It is an arithmetic number, because the mean of its divisors is an integer number (443232).

2^2216145 is an apocalyptic number.

It is an amenable number.

2216145 is a deficient number, since it is larger than the sum of its proper divisors (1329711).

2216145 is a wasteful number, since it uses less digits than its factorization.

2216145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147751.

The product of its digits is 480, while the sum is 21.

The square root of 2216145 is about 1488.6722271877. The cubic root of 2216145 is about 130.3765218310.

The spelling of 2216145 in words is "two million, two hundred sixteen thousand, one hundred forty-five".