2056447 has 4 divisors (see below), whose sum is σ = 2122816. Its totient is φ = 1990080.

The previous prime is 2056441. The next prime is 2056459. The reversal of 2056447 is 7446502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2056447 - 2⁷ = 2056319 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2056441) 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, 33138 + ... + 33199.

It is an arithmetic number, because the mean of its divisors is an integer number (530704).

2^2056447 is an apocalyptic number.

2056447 is a deficient number, since it is larger than the sum of its proper divisors (66369).

2056447 is an equidigital number, since it uses as much as digits as its factorization.

2056447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66368.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 2056447 is about 1434.0317290771. The cubic root of 2056447 is about 127.1664381148.

The spelling of 2056447 in words is "two million, fifty-six thousand, four hundred forty-seven".