40665503 has 4 divisors (see below), whose sum is σ = 40688088. Its totient is φ = 40642920.

The previous prime is 40665497. The next prime is 40665517. The reversal of 40665503 is 30556604.

40665503 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40665503 - 2⁶ = 40665439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40665523) 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, 8333 + ... + 12278.

It is an arithmetic number, because the mean of its divisors is an integer number (10172022).

Almost surely, 2^40665503 is an apocalyptic number.

40665503 is a deficient number, since it is larger than the sum of its proper divisors (22585).

40665503 is a wasteful number, since it uses less digits than its factorization.

40665503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22584.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 40665503 is about 6376.9509171704. The cubic root of 40665503 is about 343.8814237747.

The spelling of 40665503 in words is "forty million, six hundred sixty-five thousand, five hundred three".