245105220 has 48 divisors (see below), whose sum is σ = 708438528. Its totient is φ = 63252480.

The previous prime is 245105213. The next prime is 245105239. The reversal of 245105220 is 22501542.

It is a happy number.

245105220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64029 + ... + 67748.

It is an arithmetic number, because the mean of its divisors is an integer number (14759136).

Almost surely, 2^245105220 is an apocalyptic number.

245105220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245105220 is an abundant number, since it is smaller than the sum of its proper divisors (463333308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245105220 is a wasteful number, since it uses less digits than its factorization.

245105220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131820 (or 131818 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 245105220 is about 15655.8366113089. The cubic root of 245105220 is about 625.8220393946.

Adding to 245105220 its reverse (22501542), we get a palindrome (267606762).

The spelling of 245105220 in words is "two hundred forty-five million, one hundred five thousand, two hundred twenty".