20545303 has 2 divisors, whose sum is σ = 20545304. Its totient is φ = 20545302.

The previous prime is 20545277. The next prime is 20545309. The reversal of 20545303 is 30354502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20545303 - 2⁹ = 20544791 is a prime.

It is equal to p_1302943 and since 20545303 and 1302943 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20545309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10272651 + 10272652.

It is an arithmetic number, because the mean of its divisors is an integer number (10272652).

Almost surely, 2^20545303 is an apocalyptic number.

20545303 is a deficient number, since it is larger than the sum of its proper divisors (1).

20545303 is an equidigital number, since it uses as much as digits as its factorization.

20545303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 20545303 is about 4532.6926875755. The cubic root of 20545303 is about 273.8866412639.

Adding to 20545303 its reverse (30354502), we get a palindrome (50899805).

The spelling of 20545303 in words is "twenty million, five hundred forty-five thousand, three hundred three".