2021433 has 4 divisors (see below), whose sum is σ = 2695248. Its totient is φ = 1347620.

The previous prime is 2021431. The next prime is 2021471. The reversal of 2021433 is 3341202.

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 2021433 - 2¹ = 2021431 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2021431) 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, 336903 + ... + 336908.

It is an arithmetic number, because the mean of its divisors is an integer number (673812).

2^2021433 is an apocalyptic number.

It is an amenable number.

2021433 is a deficient number, since it is larger than the sum of its proper divisors (673815).

2021433 is an equidigital number, since it uses as much as digits as its factorization.

2021433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673814.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 2021433 is about 1421.7710786199. The cubic root of 2021433 is about 126.4405715845.

Adding to 2021433 its reverse (3341202), we get a palindrome (5362635).

The spelling of 2021433 in words is "two million, twenty-one thousand, four hundred thirty-three".