2520717 has 4 divisors (see below), whose sum is σ = 3360960. Its totient is φ = 1680476.

The previous prime is 2520697. The next prime is 2520769. The reversal of 2520717 is 7170252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2520717 - 2¹⁵ = 2487949 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520797) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 420117 + ... + 420122.

It is an arithmetic number, because the mean of its divisors is an integer number (840240).

2^2520717 is an apocalyptic number.

It is an amenable number.

2520717 is a deficient number, since it is larger than the sum of its proper divisors (840243).

2520717 is an equidigital number, since it uses as much as digits as its factorization.

2520717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840242.

The product of its (nonzero) digits is 980, while the sum is 24.

The square root of 2520717 is about 1587.6766043499. The cubic root of 2520717 is about 136.0947472700.

Adding to 2520717 its reverse (7170252), we get a palindrome (9690969).

The spelling of 2520717 in words is "two million, five hundred twenty thousand, seven hundred seventeen".