45591040 has 80 divisors (see below), whose sum is σ = 119322720. Its totient is φ = 16568320.

The previous prime is 45591031. The next prime is 45591041. The reversal of 45591040 is 4019554.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (45591041) 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, 27351 + ... + 28969.

It is an arithmetic number, because the mean of its divisors is an integer number (1491534).

Almost surely, 2^45591040 is an apocalyptic number.

45591040 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 45591040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59661360).

45591040 is an abundant number, since it is smaller than the sum of its proper divisors (73731680).

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

45591040 is a wasteful number, since it uses less digits than its factorization.

45591040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653 (or 1637 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 45591040 is about 6752.1137431178. The cubic root of 45591040 is about 357.2397963140.

The spelling of 45591040 in words is "forty-five million, five hundred ninety-one thousand, forty".