445630253 has 2 divisors, whose sum is σ = 445630254. Its totient is φ = 445630252.

The previous prime is 445630223. The next prime is 445630279. The reversal of 445630253 is 352036544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 313219204 + 132411049 = 17698^2 + 11507^2 .

It is a cyclic number.

It is not a de Polignac number, because 445630253 - 2¹⁴ = 445613869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445630223) 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, 222815126 + 222815127.

It is an arithmetic number, because the mean of its divisors is an integer number (222815127).

Almost surely, 2^445630253 is an apocalyptic number.

It is an amenable number.

445630253 is a deficient number, since it is larger than the sum of its proper divisors (1).

445630253 is an equidigital number, since it uses as much as digits as its factorization.

445630253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 32.

The square root of 445630253 is about 21109.9562529154. The cubic root of 445630253 is about 763.8209316217.

Adding to 445630253 its reverse (352036544), we get a palindrome (797666797).

The spelling of 445630253 in words is "four hundred forty-five million, six hundred thirty thousand, two hundred fifty-three".