245222215 has 12 divisors (see below), whose sum is σ = 342310536. Its totient is φ = 168152208.

The previous prime is 245222203. The next prime is 245222221. The reversal of 245222215 is 512222542.

It is not a de Polignac number, because 245222215 - 2¹¹ = 245220167 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 245222215.

It is a congruent number.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 500209 + ... + 500698.

It is an arithmetic number, because the mean of its divisors is an integer number (28525878).

Almost surely, 2^245222215 is an apocalyptic number.

245222215 is a deficient number, since it is larger than the sum of its proper divisors (97088321).

245222215 is a wasteful number, since it uses less digits than its factorization.

245222215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000926 (or 1000919 counting only the distinct ones).

The product of its digits is 3200, while the sum is 25.

The square root of 245222215 is about 15659.5726314609. The cubic root of 245222215 is about 625.9215971859.

Adding to 245222215 its reverse (512222542), we get a palindrome (757444757).

The spelling of 245222215 in words is "two hundred forty-five million, two hundred twenty-two thousand, two hundred fifteen".