245102449 has 2 divisors, whose sum is σ = 245102450. Its totient is φ = 245102448.

The previous prime is 245102371. The next prime is 245102471. The reversal of 245102449 is 944201542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 222606400 + 22496049 = 14920^2 + 4743^2 .

It is a cyclic number.

It is not a de Polignac number, because 245102449 - 2¹⁵ = 245069681 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 245102449.

It is not a weakly prime, because it can be changed into another prime (245102479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122551224 + 122551225.

It is an arithmetic number, because the mean of its divisors is an integer number (122551225).

Almost surely, 2^245102449 is an apocalyptic number.

It is an amenable number.

245102449 is a deficient number, since it is larger than the sum of its proper divisors (1).

245102449 is an equidigital number, since it uses as much as digits as its factorization.

245102449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 245102449 is about 15655.7481137121. The cubic root of 245102449 is about 625.8196810069.

The spelling of 245102449 in words is "two hundred forty-five million, one hundred two thousand, four hundred forty-nine".