2020021453 has 2 divisors, whose sum is σ = 2020021454. Its totient is φ = 2020021452.

The previous prime is 2020021433. The next prime is 2020021457. The reversal of 2020021453 is 3541200202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1587464649 + 432556804 = 39843^2 + 20798^2 .

It is a cyclic number.

It is not a de Polignac number, because 2020021453 - 2²¹ = 2017924301 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2020021453.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2020021457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010010726 + 1010010727.

It is an arithmetic number, because the mean of its divisors is an integer number (1010010727).

Almost surely, 2^2020021453 is an apocalyptic number.

It is an amenable number.

2020021453 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020021453 is an equidigital number, since it uses as much as digits as its factorization.

2020021453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 2020021453 is about 44944.6487693474. The cubic root of 2020021453 is about 1264.1113399109. Note that the first 3 decimals are identical.

Adding to 2020021453 its reverse (3541200202), we get a palindrome (5561221655).

The spelling of 2020021453 in words is "two billion, twenty million, twenty-one thousand, four hundred fifty-three".