2512661 has 2 divisors, whose sum is σ = 2512662. Its totient is φ = 2512660.

The previous prime is 2512649. The next prime is 2512673. The reversal of 2512661 is 1662152.

2512661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (2512649) and next prime (2512673).

It can be written as a sum of positive squares in only one way, i.e., 1500625 + 1012036 = 1225^2 + 1006^2 .

It is a cyclic number.

It is not a de Polignac number, because 2512661 - 2⁶ = 2512597 is a prime.

It is a Chen prime.

It is a plaindrome in base 11.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2512691) 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, 1256330 + 1256331.

It is an arithmetic number, because the mean of its divisors is an integer number (1256331).

2^2512661 is an apocalyptic number.

It is an amenable number.

2512661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2512661 is an equidigital number, since it uses as much as digits as its factorization.

2512661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 23.

The square root of 2512661 is about 1585.1375334652. The cubic root of 2512661 is about 135.9496100807.

The spelling of 2512661 in words is "two million, five hundred twelve thousand, six hundred sixty-one".