2021047 has 8 divisors (see below), whose sum is σ = 2359296. Its totient is φ = 1695192.

The previous prime is 2021029. The next prime is 2021053. The reversal of 2021047 is 7401202.

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 2021047 - 2¹⁵ = 1988279 is a prime.

It is a Duffinian number.

2021047 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2021047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021017) 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, 2743 + ... + 3400.

It is an arithmetic number, because the mean of its divisors is an integer number (294912).

2^2021047 is an apocalyptic number.

2021047 is a deficient number, since it is larger than the sum of its proper divisors (338249).

2021047 is an equidigital number, since it uses as much as digits as its factorization.

2021047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6197.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 2021047 is about 1421.6353259539. The cubic root of 2021047 is about 126.4325229762.

Adding to 2021047 its reverse (7401202), we get a palindrome (9422249).

The spelling of 2021047 in words is "two million, twenty-one thousand, forty-seven".