545021204 has 48 divisors (see below), whose sum is σ = 1185370368. Its totient is φ = 213504768.

The previous prime is 545021203. The next prime is 545021219. The reversal of 545021204 is 402120545.

It is a happy number.

It is a super-2 number, since 2×545021204² = 594096225619219232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 545021204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545021203) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 30224 + ... + 44760.

It is an arithmetic number, because the mean of its divisors is an integer number (24695216).

Almost surely, 2^545021204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 545021204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (592685184).

545021204 is an abundant number, since it is smaller than the sum of its proper divisors (640349164).

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

545021204 is a wasteful number, since it uses less digits than its factorization.

545021204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14664 (or 14662 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 545021204 is about 23345.6891952240. The cubic root of 545021204 is about 816.8415102158.

Adding to 545021204 its reverse (402120545), we get a palindrome (947141749).

The spelling of 545021204 in words is "five hundred forty-five million, twenty-one thousand, two hundred four".