2021473 has 8 divisors (see below), whose sum is σ = 2109888. Its totient is φ = 1935024.

The previous prime is 2021471. The next prime is 2021489. The reversal of 2021473 is 3741202.

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 2021473 - 2¹ = 2021471 is a prime.

It is a Duffinian number.

2021473 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2021473.

It is not an unprimeable number, because it can be changed into a prime (2021471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1836 + ... + 2722.

It is an arithmetic number, because the mean of its divisors is an integer number (263736).

2^2021473 is an apocalyptic number.

It is an amenable number.

2021473 is a deficient number, since it is larger than the sum of its proper divisors (88415).

2021473 is an equidigital number, since it uses as much as digits as its factorization.

2021473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 2021473 is about 1421.7851455125. The cubic root of 2021473 is about 126.4414055786.

Adding to 2021473 its reverse (3741202), we get a palindrome (5762675).

The spelling of 2021473 in words is "two million, twenty-one thousand, four hundred seventy-three".