40545017 has 8 divisors (see below), whose sum is σ = 42985800. Its totient is φ = 38110464.

The previous prime is 40544989. The next prime is 40545019. The reversal of 40545017 is 71054504.

It can be written as a sum of positive squares in 4 ways, for example, as 3444736 + 37100281 = 1856^2 + 6091^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40545017 - 2⁶ = 40544953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40545019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23459 + ... + 25127.

It is an arithmetic number, because the mean of its divisors is an integer number (5373225).

Almost surely, 2^40545017 is an apocalyptic number.

It is an amenable number.

40545017 is a deficient number, since it is larger than the sum of its proper divisors (2440783).

40545017 is a wasteful number, since it uses less digits than its factorization.

40545017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3115.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 40545017 is about 6367.4969179419. The cubic root of 40545017 is about 343.5414641730.

The spelling of 40545017 in words is "forty million, five hundred forty-five thousand, seventeen".