2726561 has 2 divisors, whose sum is σ = 2726562. Its totient is φ = 2726560.

The previous prime is 2726509. The next prime is 2726569. The reversal of 2726561 is 1656272.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2608225 + 118336 = 1615^2 + 344^2 .

It is a cyclic number.

It is not a de Polignac number, because 2726561 - 2¹⁰ = 2725537 is a prime.

It is not a weakly prime, because it can be changed into another prime (2726569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1363280 + 1363281.

It is an arithmetic number, because the mean of its divisors is an integer number (1363281).

2^2726561 is an apocalyptic number.

It is an amenable number.

2726561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2726561 is an equidigital number, since it uses as much as digits as its factorization.

2726561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 29.

The square root of 2726561 is about 1651.2301474961. The cubic root of 2726561 is about 139.7027878491.

The spelling of 2726561 in words is "two million, seven hundred twenty-six thousand, five hundred sixty-one".