2056817 has 4 divisors (see below), whose sum is σ = 2350656. Its totient is φ = 1762980.

The previous prime is 2056787. The next prime is 2056829. The reversal of 2056817 is 7186502.

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 2056817 - 2⁶ = 2056753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2056817.

It is not an unprimeable number, because it can be changed into a prime (2056517) 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, 146909 + ... + 146922.

It is an arithmetic number, because the mean of its divisors is an integer number (587664).

2^2056817 is an apocalyptic number.

It is an amenable number.

2056817 is a deficient number, since it is larger than the sum of its proper divisors (293839).

2056817 is an equidigital number, since it uses as much as digits as its factorization.

2056817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293838.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 2056817 is about 1434.1607301833. The cubic root of 2056817 is about 127.1740643363.

The spelling of 2056817 in words is "two million, fifty-six thousand, eight hundred seventeen".