545800020 has 24 divisors (see below), whose sum is σ = 1528240224. Its totient is φ = 145546656.

The previous prime is 545799997. The next prime is 545800027. The reversal of 545800020 is 20008545.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545800027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4548274 + ... + 4548393.

It is an arithmetic number, because the mean of its divisors is an integer number (63676676).

Almost surely, 2^545800020 is an apocalyptic number.

It is an amenable number.

545800020 is an abundant number, since it is smaller than the sum of its proper divisors (982440204).

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

545800020 is a wasteful number, since it uses less digits than its factorization.

545800020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9096679 (or 9096677 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 545800020 is about 23362.3633222326. The cubic root of 545800020 is about 817.2304042332.

Adding to 545800020 its reverse (20008545), we get a palindrome (565808565).

The spelling of 545800020 in words is "five hundred forty-five million, eight hundred thousand, twenty".