2826561 has 4 divisors (see below), whose sum is σ = 3768752. Its totient is φ = 1884372.

The previous prime is 2826559. The next prime is 2826563. The reversal of 2826561 is 1656282.

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.

It is an interprime number because it is at equal distance from previous prime (2826559) and next prime (2826563).

It is not a de Polignac number, because 2826561 - 2¹ = 2826559 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

2826561 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2826563) 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, 471091 + ... + 471096.

It is an arithmetic number, because the mean of its divisors is an integer number (942188).

2^2826561 is an apocalyptic number.

It is an amenable number.

2826561 is a deficient number, since it is larger than the sum of its proper divisors (942191).

2826561 is an equidigital number, since it uses as much as digits as its factorization.

2826561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942190.

The product of its digits is 5760, while the sum is 30.

The square root of 2826561 is about 1681.2379367597. The cubic root of 2826561 is about 141.3902473156.

The spelling of 2826561 in words is "two million, eight hundred twenty-six thousand, five hundred sixty-one".