40045515 has 16 divisors (see below), whose sum is σ = 64201248. Its totient is φ = 21314816.

The previous prime is 40045501. The next prime is 40045517. The reversal of 40045515 is 51554004.

40045515 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 40045515 - 2⁹ = 40045003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40045517) 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 15 ways as a sum of consecutive naturals, for example, 5959 + ... + 10751.

It is an arithmetic number, because the mean of its divisors is an integer number (4012578).

Almost surely, 2^40045515 is an apocalyptic number.

40045515 is a deficient number, since it is larger than the sum of its proper divisors (24155733).

40045515 is a wasteful number, since it uses less digits than its factorization.

40045515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5358.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 40045515 is about 6328.1525740140. The cubic root of 40045515 is about 342.1248560916.

Adding to 40045515 its reverse (51554004), we get a palindrome (91599519).

The spelling of 40045515 in words is "forty million, forty-five thousand, five hundred fifteen".