20454103 has 2 divisors, whose sum is σ = 20454104. Its totient is φ = 20454102.

The previous prime is 20454097. The next prime is 20454113. The reversal of 20454103 is 30145402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20454103 - 2⁹ = 20453591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20454113) 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 as a sum of consecutive naturals, namely, 10227051 + 10227052.

It is an arithmetic number, because the mean of its divisors is an integer number (10227052).

Almost surely, 2^20454103 is an apocalyptic number.

20454103 is a deficient number, since it is larger than the sum of its proper divisors (1).

20454103 is an equidigital number, since it uses as much as digits as its factorization.

20454103 is an odious number, because the sum of its binary digits is odd.

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

The square root of 20454103 is about 4522.6212532115. The cubic root of 20454103 is about 273.4807818703.

Adding to 20454103 its reverse (30145402), we get a palindrome (50599505).

The spelling of 20454103 in words is "twenty million, four hundred fifty-four thousand, one hundred three".