2220555 has 16 divisors (see below), whose sum is σ = 3649824. Its totient is φ = 1152000.

The previous prime is 2220553. The next prime is 2220643. The reversal of 2220555 is 5550222.

It is not a de Polignac number, because 2220555 - 2¹ = 2220553 is a prime.

It is a d-powerful number, because it can be written as 2⁹ + 2¹⁰ + 2¹⁸ + 0 + 5⁴ + 5⁵ + 5⁹ .

It is not an unprimeable number, because it can be changed into a prime (2220551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1446 + ... + 2555.

It is an arithmetic number, because the mean of its divisors is an integer number (228114).

2^2220555 is an apocalyptic number.

2220555 is a deficient number, since it is larger than the sum of its proper divisors (1429269).

2220555 is a wasteful number, since it uses less digits than its factorization.

2220555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4046.

The product of its (nonzero) digits is 1000, while the sum is 21.

The square root of 2220555 is about 1490.1526767415. The cubic root of 2220555 is about 130.4629451025.

Adding to 2220555 its reverse (5550222), we get a palindrome (7770777).

It can be divided in two parts, 2220 and 555, that multiplied together give a square (1232100 = 1110²).

The spelling of 2220555 in words is "two million, two hundred twenty thousand, five hundred fifty-five".