20030453 has 2 divisors, whose sum is σ = 20030454. Its totient is φ = 20030452.

The previous prime is 20030443. The next prime is 20030467. The reversal of 20030453 is 35403002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18645124 + 1385329 = 4318^2 + 1177^2 .

It is a cyclic number.

It is not a de Polignac number, because 20030453 - 2¹⁴ = 20014069 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20030443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10015226 + 10015227.

It is an arithmetic number, because the mean of its divisors is an integer number (10015227).

Almost surely, 2^20030453 is an apocalyptic number.

It is an amenable number.

20030453 is a deficient number, since it is larger than the sum of its proper divisors (1).

20030453 is an equidigital number, since it uses as much as digits as its factorization.

20030453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 17.

The square root of 20030453 is about 4475.5394088311. The cubic root of 20030453 is about 271.5794620594.

Adding to 20030453 its reverse (35403002), we get a palindrome (55433455).

The spelling of 20030453 in words is "twenty million, thirty thousand, four hundred fifty-three".