208545023 has 2 divisors, whose sum is σ = 208545024. Its totient is φ = 208545022.

The previous prime is 208545011. The next prime is 208545047. The reversal of 208545023 is 320545802.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 208545023 - 2⁸ = 208544767 is a prime.

It is equal to p_11525528 and since 208545023 and 11525528 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 (208545223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104272511 + 104272512.

It is an arithmetic number, because the mean of its divisors is an integer number (104272512).

Almost surely, 2^208545023 is an apocalyptic number.

208545023 is a deficient number, since it is larger than the sum of its proper divisors (1).

208545023 is an equidigital number, since it uses as much as digits as its factorization.

208545023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 208545023 is about 14441.0880130273. The cubic root of 208545023 is about 593.0162714610.

The spelling of 208545023 in words is "two hundred eight million, five hundred forty-five thousand, twenty-three".