205280353 has 2 divisors, whose sum is σ = 205280354. Its totient is φ = 205280352.

The previous prime is 205280303. The next prime is 205280381. The reversal of 205280353 is 353082502.

It is an a-pointer prime, because the next prime (205280381) can be obtained adding 205280353 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205262929 + 17424 = 14327^2 + 132^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205280353 is a prime.

It is not a weakly prime, because it can be changed into another prime (205280303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102640176 + 102640177.

It is an arithmetic number, because the mean of its divisors is an integer number (102640177).

Almost surely, 2^205280353 is an apocalyptic number.

It is an amenable number.

205280353 is a deficient number, since it is larger than the sum of its proper divisors (1).

205280353 is an equidigital number, since it uses as much as digits as its factorization.

205280353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 205280353 is about 14327.6080697373. The cubic root of 205280353 is about 589.9055225528.

The spelling of 205280353 in words is "two hundred five million, two hundred eighty thousand, three hundred fifty-three".