545341220 has 24 divisors (see below), whose sum is σ = 1163993208. Its totient is φ = 214560000.

The previous prime is 545341219. The next prime is 545341253. The reversal of 545341220 is 22143545.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11546404 + 533794816 = 3398^2 + 23104^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 545341220.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222281 + ... + 224720.

It is an arithmetic number, because the mean of its divisors is an integer number (48499717).

Almost surely, 2^545341220 is an apocalyptic number.

It is an amenable number.

545341220 is an abundant number, since it is smaller than the sum of its proper divisors (618651988).

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

545341220 is a wasteful number, since it uses less digits than its factorization.

545341220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447071 (or 447069 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 545341220 is about 23352.5420457817. The cubic root of 545341220 is about 817.0013518303.

Adding to 545341220 its reverse (22143545), we get a palindrome (567484765).

The spelling of 545341220 in words is "five hundred forty-five million, three hundred forty-one thousand, two hundred twenty".