2561701 has 4 divisors (see below), whose sum is σ = 2565100. Its totient is φ = 2558304.

The previous prime is 2561683. The next prime is 2561723. The reversal of 2561701 is 1071652.

2561701 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 159201 + 2402500 = 399^2 + 1550^2 .

It is a cyclic number.

It is not a de Polignac number, because 2561701 - 2²¹ = 464549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2561731) 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 in 3 ways as a sum of consecutive naturals, for example, 6 + ... + 2263.

It is an arithmetic number, because the mean of its divisors is an integer number (641275).

2^2561701 is an apocalyptic number.

It is an amenable number.

2561701 is a deficient number, since it is larger than the sum of its proper divisors (3399).

2561701 is a wasteful number, since it uses less digits than its factorization.

2561701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3398.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 2561701 is about 1600.5314742297. The cubic root of 2561701 is about 136.8283676622.

The spelling of 2561701 in words is "two million, five hundred sixty-one thousand, seven hundred one".