2221585 has 8 divisors (see below), whose sum is σ = 2731176. Its totient is φ = 1733760.

The previous prime is 2221567. The next prime is 2221589. The reversal of 2221585 is 5851222.

It can be written as a sum of positive squares in 4 ways, for example, as 28224 + 2193361 = 168^2 + 1481^2 .

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

It is not a de Polignac number, because 2221585 - 2²¹ = 124433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221589) 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, 5214 + ... + 5623.

It is an arithmetic number, because the mean of its divisors is an integer number (341397).

2^2221585 is an apocalyptic number.

It is an amenable number.

2221585 is a deficient number, since it is larger than the sum of its proper divisors (509591).

2221585 is a wasteful number, since it uses less digits than its factorization.

2221585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10883.

The product of its digits is 1600, while the sum is 25.

The square root of 2221585 is about 1490.4982388450. The cubic root of 2221585 is about 130.4831136433.

The spelling of 2221585 in words is "two million, two hundred twenty-one thousand, five hundred eighty-five".