2389561 has 4 divisors (see below), whose sum is σ = 2416500. Its totient is φ = 2362624.

The previous prime is 2389547. The next prime is 2389567. The reversal of 2389561 is 1659832.

2389561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 553536 + 1836025 = 744^2 + 1355^2 .

It is a cyclic number.

It is not a de Polignac number, because 2389561 - 2⁵ = 2389529 is a prime.

It is a Duffinian number.

2389561 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2389567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13336 + ... + 13513.

It is an arithmetic number, because the mean of its divisors is an integer number (604125).

2^2389561 is an apocalyptic number.

It is an amenable number.

2389561 is a deficient number, since it is larger than the sum of its proper divisors (26939).

2389561 is an equidigital number, since it uses as much as digits as its factorization.

2389561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26938.

The product of its digits is 12960, while the sum is 34.

The square root of 2389561 is about 1545.8204941066. The cubic root of 2389561 is about 133.6921909316.

The spelling of 2389561 in words is "two million, three hundred eighty-nine thousand, five hundred sixty-one".