40522321 has 12 divisors (see below), whose sum is σ = 47137792. Its totient is φ = 34124184.

The previous prime is 40522303. The next prime is 40522333. The reversal of 40522321 is 12322504.

It is not a de Polignac number, because 40522321 - 2¹³ = 40514129 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 (40522351) 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 in 11 ways as a sum of consecutive naturals, for example, 23536 + ... + 25198.

Almost surely, 2^40522321 is an apocalyptic number.

It is an amenable number.

40522321 is a deficient number, since it is larger than the sum of its proper divisors (6615471).

40522321 is an equidigital number, since it uses as much as digits as its factorization.

40522321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1788 (or 1729 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 40522321 is about 6365.7144924981. The cubic root of 40522321 is about 343.4773504796.

Adding to 40522321 its reverse (12322504), we get a palindrome (52844825).

The spelling of 40522321 in words is "forty million, five hundred twenty-two thousand, three hundred twenty-one".