2208161 has 16 divisors (see below), whose sum is σ = 2519040. Its totient is φ = 1924560.

The previous prime is 2208131. The next prime is 2208203. The reversal of 2208161 is 1618022.

It is a cyclic number.

It is not a de Polignac number, because 2208161 - 2⁶ = 2208097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2208131) 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, 13466 + ... + 13628.

It is an arithmetic number, because the mean of its divisors is an integer number (157440).

2^2208161 is an apocalyptic number.

It is an amenable number.

2208161 is a deficient number, since it is larger than the sum of its proper divisors (310879).

2208161 is a wasteful number, since it uses less digits than its factorization.

2208161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 2208161 is about 1485.9882233719. The cubic root of 2208161 is about 130.2197663404.

The spelling of 2208161 in words is "two million, two hundred eight thousand, one hundred sixty-one".