45544040 has 32 divisors (see below), whose sum is σ = 105247080. Its totient is φ = 17724672.

The previous prime is 45544021. The next prime is 45544067. The reversal of 45544040 is 4044554.

It can be written as a sum of positive squares in 4 ways, for example, as 36168196 + 9375844 = 6014^2 + 3062^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13907 + ... + 16866.

Almost surely, 2^45544040 is an apocalyptic number.

45544040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45544040 is an abundant number, since it is smaller than the sum of its proper divisors (59703040).

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

45544040 is a wasteful number, since it uses less digits than its factorization.

45544040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30821 (or 30817 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 45544040 is about 6748.6324540606. The cubic root of 45544040 is about 357.1169940890.

Adding to 45544040 its reverse (4044554), we get a palindrome (49588594).

The spelling of 45544040 in words is "forty-five million, five hundred forty-four thousand, forty".