2512561 has 2 divisors, whose sum is σ = 2512562. Its totient is φ = 2512560.

The previous prime is 2512553. The next prime is 2512597. The reversal of 2512561 is 1652152.

2512561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2433600 + 78961 = 1560^2 + 281^2 .

It is a cyclic number.

It is not a de Polignac number, because 2512561 - 2³ = 2512553 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2512501) 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 as a sum of consecutive naturals, namely, 1256280 + 1256281.

It is an arithmetic number, because the mean of its divisors is an integer number (1256281).

2^2512561 is an apocalyptic number.

It is an amenable number.

2512561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2512561 is an equidigital number, since it uses as much as digits as its factorization.

2512561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 600, while the sum is 22.

The square root of 2512561 is about 1585.1059901470. The cubic root of 2512561 is about 135.9478065291.

The spelling of 2512561 in words is "two million, five hundred twelve thousand, five hundred sixty-one".