2289121 has 4 divisors (see below), whose sum is σ = 2388672. Its totient is φ = 2189572.

The previous prime is 2289083. The next prime is 2289127. The reversal of 2289121 is 1219822.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1219822 = 2 ⋅609911.

It is a cyclic number.

It is not a de Polignac number, because 2289121 - 2²¹ = 191969 is a prime.

It is a Duffinian number.

2289121 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2289127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49741 + ... + 49786.

It is an arithmetic number, because the mean of its divisors is an integer number (597168).

2^2289121 is an apocalyptic number.

It is an amenable number.

2289121 is a deficient number, since it is larger than the sum of its proper divisors (99551).

2289121 is an equidigital number, since it uses as much as digits as its factorization.

2289121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99550.

The product of its digits is 576, while the sum is 25.

The square root of 2289121 is about 1512.9841373921. The cubic root of 2289121 is about 131.7921622120.

The spelling of 2289121 in words is "two million, two hundred eighty-nine thousand, one hundred twenty-one".