245543020 has 12 divisors (see below), whose sum is σ = 515640384. Its totient is φ = 98217200.

The previous prime is 245543017. The next prime is 245543041. The reversal of 245543020 is 20345542.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6138556 + ... + 6138595.

It is an arithmetic number, because the mean of its divisors is an integer number (42970032).

Almost surely, 2^245543020 is an apocalyptic number.

245543020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245543020 is an abundant number, since it is smaller than the sum of its proper divisors (270097364).

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

245543020 is a wasteful number, since it uses less digits than its factorization.

245543020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12277160 (or 12277158 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 245543020 is about 15669.8123792214. The cubic root of 245543020 is about 626.1944262992.

Adding to 245543020 its reverse (20345542), we get a palindrome (265888562).

The spelling of 245543020 in words is "two hundred forty-five million, five hundred forty-three thousand, twenty".