2561717 has 8 divisors (see below), whose sum is σ = 2697216. Its totient is φ = 2428272.

The previous prime is 2561683. The next prime is 2561723. The reversal of 2561717 is 7171652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2561717 - 2⁶ = 2561653 is a prime.

It is a pancake number, because a pancake can be divided into 2561717 parts by 2263 straight cuts.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2561717.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2561737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2483 + ... + 3359.

It is an arithmetic number, because the mean of its divisors is an integer number (337152).

2^2561717 is an apocalyptic number.

It is an amenable number.

2561717 is a deficient number, since it is larger than the sum of its proper divisors (135499).

2561717 is a wasteful number, since it uses less digits than its factorization.

2561717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027.

The product of its digits is 2940, while the sum is 29.

The square root of 2561717 is about 1600.5364725616. The cubic root of 2561717 is about 136.8286525315.

The spelling of 2561717 in words is "two million, five hundred sixty-one thousand, seven hundred seventeen".