245645201 has 2 divisors, whose sum is σ = 245645202. Its totient is φ = 245645200.

The previous prime is 245645173. The next prime is 245645237. The reversal of 245645201 is 102546542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211993600 + 33651601 = 14560^2 + 5801^2 .

It is a cyclic number.

It is not a de Polignac number, because 245645201 - 2⁶ = 245645137 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (245648201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122822600 + 122822601.

It is an arithmetic number, because the mean of its divisors is an integer number (122822601).

Almost surely, 2^245645201 is an apocalyptic number.

It is an amenable number.

245645201 is a deficient number, since it is larger than the sum of its proper divisors (1).

245645201 is an equidigital number, since it uses as much as digits as its factorization.

245645201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 245645201 is about 15673.0724811697. The cubic root of 245645201 is about 626.2812763877.

The spelling of 245645201 in words is "two hundred forty-five million, six hundred forty-five thousand, two hundred one".