2256542717 has 16 divisors (see below), whose sum is σ = 2722699392. Its totient is φ = 1842419520.

The previous prime is 2256542689. The next prime is 2256542737. The reversal of 2256542717 is 7172456522.

It is a cyclic number.

It is not a de Polignac number, because 2256542717 - 2¹⁸ = 2256280573 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 (2256542737) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207953 + ... + 218534.

It is an arithmetic number, because the mean of its divisors is an integer number (170168712).

Almost surely, 2^2256542717 is an apocalyptic number.

It is an amenable number.

2256542717 is a deficient number, since it is larger than the sum of its proper divisors (466156675).

2256542717 is a wasteful number, since it uses less digits than its factorization.

2256542717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426548.

The product of its digits is 235200, while the sum is 41.

The square root of 2256542717 is about 47503.0811316487. The cubic root of 2256542717 is about 1311.6395990196.

The spelling of 2256542717 in words is "two billion, two hundred fifty-six million, five hundred forty-two thousand, seven hundred seventeen".