40321597 has 4 divisors (see below), whose sum is σ = 40377340. Its totient is φ = 40265856.

The previous prime is 40321583. The next prime is 40321613. The reversal of 40321597 is 79512304.

40321597 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 36554116 + 3767481 = 6046^2 + 1941^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40321597 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 (40321517) 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, 26772 + ... + 28237.

It is an arithmetic number, because the mean of its divisors is an integer number (10094335).

Almost surely, 2^40321597 is an apocalyptic number.

It is an amenable number.

40321597 is a deficient number, since it is larger than the sum of its proper divisors (55743).

40321597 is an equidigital number, since it uses as much as digits as its factorization.

40321597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55742.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 40321597 is about 6349.9288972397. The cubic root of 40321597 is about 342.9092825054.

The spelling of 40321597 in words is "forty million, three hundred twenty-one thousand, five hundred ninety-seven".