40504517 has 2 divisors, whose sum is σ = 40504518. Its totient is φ = 40504516.

The previous prime is 40504423. The next prime is 40504543. The reversal of 40504517 is 71540504.

It is an a-pointer prime, because the next prime (40504543) can be obtained adding 40504517 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35117476 + 5387041 = 5926^2 + 2321^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40504517 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40504567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20252258 + 20252259.

It is an arithmetic number, because the mean of its divisors is an integer number (20252259).

Almost surely, 2^40504517 is an apocalyptic number.

It is an amenable number.

40504517 is a deficient number, since it is larger than the sum of its proper divisors (1).

40504517 is an equidigital number, since it uses as much as digits as its factorization.

40504517 is an odious number, because the sum of its binary digits is odd.

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

The square root of 40504517 is about 6364.3159098209. The cubic root of 40504517 is about 343.4270393883.

The spelling of 40504517 in words is "forty million, five hundred four thousand, five hundred seventeen".