2256917 has 8 divisors (see below), whose sum is σ = 2451456. Its totient is φ = 2065392.

The previous prime is 2256913. The next prime is 2256923. The reversal of 2256917 is 7196522.

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 2256917 - 2² = 2256913 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 (2256911) 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, 968 + ... + 2334.

It is an arithmetic number, because the mean of its divisors is an integer number (306432).

2^2256917 is an apocalyptic number.

It is an amenable number.

2256917 is a deficient number, since it is larger than the sum of its proper divisors (194539).

2256917 is a wasteful number, since it uses less digits than its factorization.

2256917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1507.

The product of its digits is 7560, while the sum is 32.

The square root of 2256917 is about 1502.3038973523. The cubic root of 2256917 is about 131.1712113677.

The spelling of 2256917 in words is "two million, two hundred fifty-six thousand, nine hundred seventeen".