665055253 has 2 divisors, whose sum is σ = 665055254. Its totient is φ = 665055252.

The previous prime is 665055239. The next prime is 665055263. The reversal of 665055253 is 352550566.

665055253 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 can be written as a sum of positive squares in only one way, i.e., 485012529 + 180042724 = 22023^2 + 13418^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-665055253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (665055263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332527626 + 332527627.

It is an arithmetic number, because the mean of its divisors is an integer number (332527627).

Almost surely, 2^665055253 is an apocalyptic number.

It is an amenable number.

665055253 is a deficient number, since it is larger than the sum of its proper divisors (1).

665055253 is an equidigital number, since it uses as much as digits as its factorization.

665055253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 135000, while the sum is 37.

The square root of 665055253 is about 25788.6652039224. The cubic root of 665055253 is about 872.8760471271.

The spelling of 665055253 in words is "six hundred sixty-five million, fifty-five thousand, two hundred fifty-three".