45581040 has 240 divisors, whose sum is σ = 165391200. Its totient is φ = 11225088.

The previous prime is 45581021. The next prime is 45581089. The reversal of 45581040 is 4018554.

45581040 is a `hidden beast` number, since 4 + 558 + 104 + 0 = 666.

45581040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (240).

It is a junction number, because it is equal to n+sod(n) for n = 45580995 and 45581013.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 772531 + ... + 772589.

It is an arithmetic number, because the mean of its divisors is an integer number (689130).

Almost surely, 2^45581040 is an apocalyptic number.

45581040 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 45581040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82695600).

45581040 is an abundant number, since it is smaller than the sum of its proper divisors (119810160).

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

45581040 is a wasteful number, since it uses less digits than its factorization.

45581040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 135 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 45581040 is about 6751.3731936548. The cubic root of 45581040 is about 357.2136752517.

Adding to 45581040 its reverse (4018554), we get a palindrome (49599594).

The spelling of 45581040 in words is "forty-five million, five hundred eighty-one thousand, forty".