40315445 has 4 divisors (see below), whose sum is σ = 48378540. Its totient is φ = 32252352.

The previous prime is 40315417. The next prime is 40315453. The reversal of 40315445 is 54451304.

40315445 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 can be written as a sum of positive squares in 2 ways, for example, as 12794929 + 27520516 = 3577^2 + 5246^2 .

It is a cyclic number.

It is not a de Polignac number, because 40315445 - 2⁸ = 40315189 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 4031540 + ... + 4031549.

It is an arithmetic number, because the mean of its divisors is an integer number (12094635).

Almost surely, 2^40315445 is an apocalyptic number.

It is an amenable number.

40315445 is a deficient number, since it is larger than the sum of its proper divisors (8063095).

40315445 is an equidigital number, since it uses as much as digits as its factorization.

40315445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8063094.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 40315445 is about 6349.4444638882. Note that the first 4 decimals coincide. The cubic root of 40315445 is about 342.8918420156.

Adding to 40315445 its reverse (54451304), we get a palindrome (94766749).

The spelling of 40315445 in words is "forty million, three hundred fifteen thousand, four hundred forty-five".