4155543220 has 24 divisors (see below), whose sum is σ = 8929587744. Its totient is φ = 1623560736.

The previous prime is 4155543191. The next prime is 4155543221. The reversal of 4155543220 is 223455514.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4155543221) 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, 2415154 + ... + 2416873.

It is an arithmetic number, because the mean of its divisors is an integer number (372066156).

Almost surely, 2^4155543220 is an apocalyptic number.

It is an amenable number.

4155543220 is an abundant number, since it is smaller than the sum of its proper divisors (4774044524).

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

4155543220 is a wasteful number, since it uses less digits than its factorization.

4155543220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4832079 (or 4832077 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 4155543220 is about 64463.5030075158. The cubic root of 4155543220 is about 1607.7157555749.

Adding to 4155543220 its reverse (223455514), we get a palindrome (4378998734).

The spelling of 4155543220 in words is "four billion, one hundred fifty-five million, five hundred forty-three thousand, two hundred twenty".