45445280 has 48 divisors (see below), whose sum is σ = 107775360. Its totient is φ = 18108672.

The previous prime is 45445277. The next prime is 45445289. The reversal of 45445280 is 8254454.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (45445289) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 69917 + ... + 70563.

It is an arithmetic number, because the mean of its divisors is an integer number (2245320).

Almost surely, 2^45445280 is an apocalyptic number.

45445280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45445280 is an abundant number, since it is smaller than the sum of its proper divisors (62330080).

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

45445280 is a wasteful number, since it uses less digits than its factorization.

45445280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1101 (or 1093 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 32.

The square root of 45445280 is about 6741.3114451121. The cubic root of 45445280 is about 356.8586770986.

The spelling of 45445280 in words is "forty-five million, four hundred forty-five thousand, two hundred eighty".