2021935 has 4 divisors (see below), whose sum is σ = 2426328. Its totient is φ = 1617544.

The previous prime is 2021933. The next prime is 2021959. The reversal of 2021935 is 5391202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5391202 = 2 ⋅2695601.

It is a cyclic number.

It is not a de Polignac number, because 2021935 - 2¹ = 2021933 is a prime.

It is a super-2 number, since 2×2021935² = 8176442288450, which contains 22 as substring.

It is a Duffinian number.

2021935 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021933) 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, 202189 + ... + 202198.

It is an arithmetic number, because the mean of its divisors is an integer number (606582).

2^2021935 is an apocalyptic number.

2021935 is a deficient number, since it is larger than the sum of its proper divisors (404393).

2021935 is an equidigital number, since it uses as much as digits as its factorization.

2021935 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404392.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 2021935 is about 1421.9476080362. The cubic root of 2021935 is about 126.4510374130.

The spelling of 2021935 in words is "two million, twenty-one thousand, nine hundred thirty-five".