40521504 has 24 divisors (see below), whose sum is σ = 106369200. Its totient is φ = 13507136.

The previous prime is 40521487. The next prime is 40521511. The reversal of 40521504 is 40512504.

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 210954 + ... + 211145.

It is an arithmetic number, because the mean of its divisors is an integer number (4432050).

Almost surely, 2^40521504 is an apocalyptic number.

It is an amenable number.

40521504 is an abundant number, since it is smaller than the sum of its proper divisors (65847696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40521504 is a wasteful number, since it uses less digits than its factorization.

40521504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422112 (or 422104 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 40521504 is about 6365.6503202736. The cubic root of 40521504 is about 343.4750420984.

The spelling of 40521504 in words is "forty million, five hundred twenty-one thousand, five hundred four".