40521441 has 8 divisors (see below), whose sum is σ = 54130624. Its totient is φ = 26963280.

The previous prime is 40521427. The next prime is 40521443. The reversal of 40521441 is 14412504.

It is a happy number.

40521441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40521441 - 2¹¹ = 40519393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40521443) 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 7 ways as a sum of consecutive naturals, for example, 10861 + ... + 14106.

It is an arithmetic number, because the mean of its divisors is an integer number (6766328).

Almost surely, 2^40521441 is an apocalyptic number.

It is an amenable number.

40521441 is a deficient number, since it is larger than the sum of its proper divisors (13609183).

40521441 is a wasteful number, since it uses less digits than its factorization.

40521441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25511.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 40521441 is about 6365.6453718378. The cubic root of 40521441 is about 343.4748640947.

Adding to 40521441 its reverse (14412504), we get a palindrome (54933945).

The spelling of 40521441 in words is "forty million, five hundred twenty-one thousand, four hundred forty-one".