40005524 has 24 divisors (see below), whose sum is σ = 75640320. Its totient is φ = 18404064.

The previous prime is 40005479. The next prime is 40005541. The reversal of 40005524 is 42550004.

It is a happy number.

40005524 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 40005496 and 40005505.

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 7 ways as a sum of consecutive naturals, for example, 17597 + ... + 19739.

It is an arithmetic number, because the mean of its divisors is an integer number (3151680).

Almost surely, 2^40005524 is an apocalyptic number.

It is an amenable number.

40005524 is a deficient number, since it is larger than the sum of its proper divisors (35634796).

40005524 is a wasteful number, since it uses less digits than its factorization.

40005524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2519 (or 2517 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 40005524 is about 6324.9920158052. The cubic root of 40005524 is about 342.0109317892.

Adding to 40005524 its reverse (42550004), we get a palindrome (82555528).

The spelling of 40005524 in words is "forty million, five thousand, five hundred twenty-four".