12561701 has 2 divisors, whose sum is σ = 12561702. Its totient is φ = 12561700.

The previous prime is 12561671. The next prime is 12561707. The reversal of 12561701 is 10716521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12285025 + 276676 = 3505^2 + 526^2 .

It is a cyclic number.

It is not a de Polignac number, because 12561701 - 2¹⁰ = 12560677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12561707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6280850 + 6280851.

It is an arithmetic number, because the mean of its divisors is an integer number (6280851).

Almost surely, 2^12561701 is an apocalyptic number.

It is an amenable number.

12561701 is a deficient number, since it is larger than the sum of its proper divisors (1).

12561701 is an equidigital number, since it uses as much as digits as its factorization.

12561701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 12561701 is about 3544.2490036678. The cubic root of 12561701 is about 232.4606693404.

The spelling of 12561701 in words is "twelve million, five hundred sixty-one thousand, seven hundred one".