40544001 has 24 divisors (see below), whose sum is σ = 62549760. Its totient is φ = 25250400.

The previous prime is 40543999. The next prime is 40544011. The reversal of 40544001 is 10044504.

It is not a de Polignac number, because 40544001 - 2¹ = 40543999 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40544011) 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 23 ways as a sum of consecutive naturals, for example, 5586 + ... + 10596.

It is an arithmetic number, because the mean of its divisors is an integer number (2606240).

Almost surely, 2^40544001 is an apocalyptic number.

It is an amenable number.

40544001 is a deficient number, since it is larger than the sum of its proper divisors (22005759).

40544001 is a wasteful number, since it uses less digits than its factorization.

40544001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5077 (or 5074 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 40544001 is about 6367.4171372700. The cubic root of 40544001 is about 343.5385945969.

Adding to 40544001 its reverse (10044504), we get a palindrome (50588505).

The spelling of 40544001 in words is "forty million, five hundred forty-four thousand, one".