245272219 has 2 divisors, whose sum is σ = 245272220. Its totient is φ = 245272218.

The previous prime is 245272213. The next prime is 245272229. The reversal of 245272219 is 912272542.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245272219 - 2¹⁹ = 244747931 is a prime.

It is a super-2 number, since 2×245272219² = 120316922826367922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (245272213) 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, 122636109 + 122636110.

It is an arithmetic number, because the mean of its divisors is an integer number (122636110).

Almost surely, 2^245272219 is an apocalyptic number.

245272219 is a deficient number, since it is larger than the sum of its proper divisors (1).

245272219 is an equidigital number, since it uses as much as digits as its factorization.

245272219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 34.

The square root of 245272219 is about 15661.1691453735. The cubic root of 245272219 is about 625.9641388134.

The spelling of 245272219 in words is "two hundred forty-five million, two hundred seventy-two thousand, two hundred nineteen".