2489561 has 6 divisors (see below), whose sum is σ = 2553486. Its totient is φ = 2427200.

The previous prime is 2489533. The next prime is 2489567. The reversal of 2489561 is 1659842.

It can be written as a sum of positive squares in 3 ways, for example, as 105625 + 2383936 = 325^2 + 1544^2 .

It is not a de Polignac number, because 2489561 - 2¹⁰ = 2488537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2489567) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 941 + ... + 2421.

It is an arithmetic number, because the mean of its divisors is an integer number (425581).

2^2489561 is an apocalyptic number.

It is an amenable number.

2489561 is a deficient number, since it is larger than the sum of its proper divisors (63925).

2489561 is an equidigital number, since it uses as much as digits as its factorization.

2489561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1563 (or 1522 counting only the distinct ones).

The product of its digits is 17280, while the sum is 35.

The square root of 2489561 is about 1577.8342752013. The cubic root of 2489561 is about 135.5317119170.

The spelling of 2489561 in words is "two million, four hundred eighty-nine thousand, five hundred sixty-one".