2021493 has 8 divisors (see below), whose sum is σ = 2812608. Its totient is φ = 1289024.

The previous prime is 2021489. The next prime is 2021497. The reversal of 2021493 is 3941202.

It is an interprime number because it is at equal distance from previous prime (2021489) and next prime (2021497).

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 2021493 - 2² = 2021489 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14580 + ... + 14717.

It is an arithmetic number, because the mean of its divisors is an integer number (351576).

2^2021493 is an apocalyptic number.

2021493 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2021493 is a deficient number, since it is larger than the sum of its proper divisors (791115).

2021493 is a wasteful number, since it uses less digits than its factorization.

2021493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29323.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 2021493 is about 1421.7921789066. The cubic root of 2021493 is about 126.4418225715.

Adding to 2021493 its reverse (3941202), we get a palindrome (5962695).

The spelling of 2021493 in words is "two million, twenty-one thousand, four hundred ninety-three".