45549320 has 16 divisors (see below), whose sum is σ = 102486060. Its totient is φ = 18219712.

The previous prime is 45549277. The next prime is 45549359. The reversal of 45549320 is 2394554.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 45508516 + 40804 = 6746^2 + 202^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 569327 + ... + 569406.

Almost surely, 2^45549320 is an apocalyptic number.

45549320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45549320 is an abundant number, since it is smaller than the sum of its proper divisors (56936740).

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

45549320 is a wasteful number, since it uses less digits than its factorization.

45549320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138744 (or 1138740 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 45549320 is about 6749.0236330895. The cubic root of 45549320 is about 357.1307939545.

The spelling of 45549320 in words is "forty-five million, five hundred forty-nine thousand, three hundred twenty".