2056217 has 4 divisors (see below), whose sum is σ = 2104080. Its totient is φ = 2008356.

The previous prime is 2056211. The next prime is 2056247. The reversal of 2056217 is 7126502.

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 2056217 - 2⁸ = 2055961 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2056192 and 2056201.

It is not an unprimeable number, because it can be changed into a prime (2056211) 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, 23867 + ... + 23952.

It is an arithmetic number, because the mean of its divisors is an integer number (526020).

2^2056217 is an apocalyptic number.

It is an amenable number.

2056217 is a deficient number, since it is larger than the sum of its proper divisors (47863).

2056217 is an equidigital number, since it uses as much as digits as its factorization.

2056217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47862.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 2056217 is about 1433.9515333511. The cubic root of 2056217 is about 127.1616970296.

The spelling of 2056217 in words is "two million, fifty-six thousand, two hundred seventeen".