2056021 has 8 divisors (see below), whose sum is σ = 2253888. Its totient is φ = 1860000.

The previous prime is 2056007. The next prime is 2056069. The reversal of 2056021 is 1206502.

It is a happy number.

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 2056021 - 2⁹ = 2055509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2055986 and 2056004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2056001) 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, 3121 + ... + 3721.

It is an arithmetic number, because the mean of its divisors is an integer number (281736).

2^2056021 is an apocalyptic number.

It is an amenable number.

2056021 is a deficient number, since it is larger than the sum of its proper divisors (197867).

2056021 is a wasteful number, since it uses less digits than its factorization.

2056021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 2056021 is about 1433.8831891057. The cubic root of 2056021 is about 127.1576565215.

It can be divided in two parts, 205 and 6021, that added together give a palindrome (6226).

The spelling of 2056021 in words is "two million, fifty-six thousand, twenty-one".