208270453 has 2 divisors, whose sum is σ = 208270454. Its totient is φ = 208270452.

The previous prime is 208270423. The next prime is 208270507. The reversal of 208270453 is 354072802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198894609 + 9375844 = 14103^2 + 3062^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-208270453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (208270423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104135226 + 104135227.

It is an arithmetic number, because the mean of its divisors is an integer number (104135227).

Almost surely, 2^208270453 is an apocalyptic number.

It is an amenable number.

208270453 is a deficient number, since it is larger than the sum of its proper divisors (1).

208270453 is an equidigital number, since it uses as much as digits as its factorization.

208270453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 208270453 is about 14431.5783267112. The cubic root of 208270453 is about 592.7559024437.

The spelling of 208270453 in words is "two hundred eight million, two hundred seventy thousand, four hundred fifty-three".