2209601 has 2 divisors, whose sum is σ = 2209602. Its totient is φ = 2209600.

The previous prime is 2209589. The next prime is 2209607. The reversal of 2209601 is 1069022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1825201 + 384400 = 1351^2 + 620^2 .

It is a cyclic number.

It is not a de Polignac number, because 2209601 - 2¹⁸ = 1947457 is a prime.

It is not a weakly prime, because it can be changed into another prime (2209607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1104800 + 1104801.

It is an arithmetic number, because the mean of its divisors is an integer number (1104801).

2^2209601 is an apocalyptic number.

It is an amenable number.

2209601 is a deficient number, since it is larger than the sum of its proper divisors (1).

2209601 is an equidigital number, since it uses as much as digits as its factorization.

2209601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 2209601 is about 1486.4726704518. The cubic root of 2209601 is about 130.2480667704.

The spelling of 2209601 in words is "two million, two hundred nine thousand, six hundred one".