45005540 has 24 divisors (see below), whose sum is σ = 94667832. Its totient is φ = 17972480.

The previous prime is 45005539. The next prime is 45005557. The reversal of 45005540 is 4550054.

It can be written as a sum of positive squares in 4 ways, for example, as 2050624 + 42954916 = 1432^2 + 6554^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13742 + ... + 16698.

It is an arithmetic number, because the mean of its divisors is an integer number (3944493).

Almost surely, 2^45005540 is an apocalyptic number.

It is an amenable number.

45005540 is an abundant number, since it is smaller than the sum of its proper divisors (49662292).

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

45005540 is a wasteful number, since it uses less digits than its factorization.

45005540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3727 (or 3725 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 45005540 is about 6708.6168470110. The cubic root of 45005540 is about 355.7039262863.

Adding to 45005540 its reverse (4550054), we get a palindrome (49555594).

The spelling of 45005540 in words is "forty-five million, five thousand, five hundred forty".