545242220 has 12 divisors (see below), whose sum is σ = 1145008704. Its totient is φ = 218096880.

The previous prime is 545242211. The next prime is 545242237. The reversal of 545242220 is 22242545.

It is a self number, because there is not a number n which added to its sum of digits gives 545242220.

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 3 ways as a sum of consecutive naturals, for example, 13631036 + ... + 13631075.

It is an arithmetic number, because the mean of its divisors is an integer number (95417392).

Almost surely, 2^545242220 is an apocalyptic number.

It is an amenable number.

545242220 is an abundant number, since it is smaller than the sum of its proper divisors (599766484).

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

545242220 is a wasteful number, since it uses less digits than its factorization.

545242220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27262120 (or 27262118 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 545242220 is about 23350.4222659891. The cubic root of 545242220 is about 816.9519099849.

Adding to 545242220 its reverse (22242545), we get a palindrome (567484765).

The spelling of 545242220 in words is "five hundred forty-five million, two hundred forty-two thousand, two hundred twenty".