545420052 has 72 divisors (see below), whose sum is σ = 1430268840. Its totient is φ = 175042560.

The previous prime is 545420047. The next prime is 545420059. The reversal of 545420052 is 250024545.

545420052 is a `hidden beast` number, since 5 + 454 + 200 + 5 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 43480836 + 501939216 = 6594^2 + 22404^2 .

It is a junction number, because it is equal to n+sod(n) for n = 545419998 and 545420025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545420059) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 618652 + ... + 619532.

It is an arithmetic number, because the mean of its divisors is an integer number (19864845).

Almost surely, 2^545420052 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 545420052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (715134420).

545420052 is an abundant number, since it is smaller than the sum of its proper divisors (884848788).

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

545420052 is a wasteful number, since it uses less digits than its factorization.

545420052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513 (or 1508 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 545420052 is about 23354.2298524272. The cubic root of 545420052 is about 817.0407172435.

Adding to 545420052 its reverse (250024545), we get a palindrome (795444597).

The spelling of 545420052 in words is "five hundred forty-five million, four hundred twenty thousand, fifty-two".