45543220 has 48 divisors (see below), whose sum is σ = 100533888. Its totient is φ = 17297280.

The previous prime is 45543203. The next prime is 45543229. The reversal of 45543220 is 2234554.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45543229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82987 + ... + 83533.

It is an arithmetic number, because the mean of its divisors is an integer number (2094456).

Almost surely, 2^45543220 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 45543220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50266944).

45543220 is an abundant number, since it is smaller than the sum of its proper divisors (54990668).

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

45543220 is a wasteful number, since it uses less digits than its factorization.

45543220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760 (or 758 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 45543220 is about 6748.5717007379. The cubic root of 45543220 is about 357.1148508324.

Adding to 45543220 its reverse (2234554), we get a palindrome (47777774).

The spelling of 45543220 in words is "forty-five million, five hundred forty-three thousand, two hundred twenty".