208545047 has 2 divisors, whose sum is σ = 208545048. Its totient is φ = 208545046.

The previous prime is 208545023. The next prime is 208545059. The reversal of 208545047 is 740545802.

208545047 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 208545047 - 2¹⁶ = 208479511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 208544998 and 208545016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (208565047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104272523 + 104272524.

It is an arithmetic number, because the mean of its divisors is an integer number (104272524).

Almost surely, 2^208545047 is an apocalyptic number.

208545047 is a deficient number, since it is larger than the sum of its proper divisors (1).

208545047 is an equidigital number, since it uses as much as digits as its factorization.

208545047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44800, while the sum is 35.

The square root of 208545047 is about 14441.0888439896. The cubic root of 208545047 is about 593.0162942097.

The spelling of 208545047 in words is "two hundred eight million, five hundred forty-five thousand, forty-seven".