543220101 has 10 divisors (see below), whose sum is σ = 811477062. Its totient is φ = 362146680.

The previous prime is 543220063. The next prime is 543220103. The reversal of 543220101 is 101022345.

543220101 is a `hidden beast` number, since 543 + 2 + 20 + 101 = 666.

It can be written as a sum of positive squares in only one way, i.e., 486202500 + 57017601 = 22050^2 + 7551^2 .

It is not a de Polignac number, because 543220101 - 2¹³ = 543211909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (543220103) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3353130 + ... + 3353291.

Almost surely, 2^543220101 is an apocalyptic number.

It is an amenable number.

543220101 is a deficient number, since it is larger than the sum of its proper divisors (268256961).

543220101 is an equidigital number, since it uses as much as digits as its factorization.

543220101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6706433 (or 6706424 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 543220101 is about 23307.0826359714. The cubic root of 543220101 is about 815.9407261227.

Adding to 543220101 its reverse (101022345), we get a palindrome (644242446).

The spelling of 543220101 in words is "five hundred forty-three million, two hundred twenty thousand, one hundred one".