45561440 has 24 divisors (see below), whose sum is σ = 107639280. Its totient is φ = 18224512.

The previous prime is 45561437. The next prime is 45561443. The reversal of 45561440 is 4416554.

45561440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (45561437) and next prime (45561443).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45561443) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 142220 + ... + 142539.

It is an arithmetic number, because the mean of its divisors is an integer number (4484970).

Almost surely, 2^45561440 is an apocalyptic number.

45561440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45561440 is an abundant number, since it is smaller than the sum of its proper divisors (62077840).

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

45561440 is a wasteful number, since it uses less digits than its factorization.

45561440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284774 (or 284766 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 45561440 is about 6749.9214810248. The cubic root of 45561440 is about 357.1624668852.

Adding to 45561440 its reverse (4416554), we get a palindrome (49977994).

The spelling of 45561440 in words is "forty-five million, five hundred sixty-one thousand, four hundred forty".