45543240 has 96 divisors (see below), whose sum is σ = 150129720. Its totient is φ = 11971584.

The previous prime is 45543229. The next prime is 45543257. The reversal of 45543240 is 4234554.

It can be written as a sum of positive squares in 4 ways, for example, as 36650916 + 8892324 = 6054^2 + 2982^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25414 + ... + 27146.

Almost surely, 2^45543240 is an apocalyptic number.

45543240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45543240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75064860).

45543240 is an abundant number, since it is smaller than the sum of its proper divisors (104586480).

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

45543240 is a wasteful number, since it uses less digits than its factorization.

45543240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1823 (or 1816 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 45543240 is about 6748.5731825327. The cubic root of 45543240 is about 357.1149031073.

Adding to 45543240 its reverse (4234554), we get a palindrome (49777794).

The spelling of 45543240 in words is "forty-five million, five hundred forty-three thousand, two hundred forty".