2199545 has 16 divisors (see below), whose sum is σ = 2831760. Its totient is φ = 1634304.

The previous prime is 2199529. The next prime is 2199577. The reversal of 2199545 is 5459912.

It can be written as a sum of positive squares in 8 ways, for example, as 256 + 2199289 = 16^2 + 1483^2 .

It is a cyclic number.

It is not a de Polignac number, because 2199545 - 2⁴ = 2199529 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9491 + ... + 9719.

It is an arithmetic number, because the mean of its divisors is an integer number (176985).

2^2199545 is an apocalyptic number.

It is an amenable number.

2199545 is a deficient number, since it is larger than the sum of its proper divisors (632215).

2199545 is a wasteful number, since it uses less digits than its factorization.

2199545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364.

The product of its digits is 16200, while the sum is 35.

The square root of 2199545 is about 1483.0863090191. The cubic root of 2199545 is about 130.0501778683.

It can be divided in two parts, 2199 and 545, that added together give a cube (2744 = 14³).

The spelling of 2199545 in words is "two million, one hundred ninety-nine thousand, five hundred forty-five".