2021153 has 4 divisors (see below), whose sum is σ = 2024880. Its totient is φ = 2017428.

The previous prime is 2021143. The next prime is 2021167. The reversal of 2021153 is 3511202.

It is a happy number.

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 2021153 - 2⁴ = 2021137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021143) 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, 875 + ... + 2192.

It is an arithmetic number, because the mean of its divisors is an integer number (506220).

2^2021153 is an apocalyptic number.

It is an amenable number.

2021153 is a deficient number, since it is larger than the sum of its proper divisors (3727).

2021153 is an equidigital number, since it uses as much as digits as its factorization.

2021153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3726.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 2021153 is about 1421.6726064745. The cubic root of 2021153 is about 126.4347333179.

Adding to 2021153 its reverse (3511202), we get a palindrome (5532355).

The spelling of 2021153 in words is "two million, twenty-one thousand, one hundred fifty-three".