40804521 has 8 divisors (see below), whose sum is σ = 54475584. Its totient is φ = 27168240.

The previous prime is 40804513. The next prime is 40804523. The reversal of 40804521 is 12540804.

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

It is not a de Polignac number, because 40804521 - 2³ = 40804513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40804491 and 40804500.

It is not an unprimeable number, because it can be changed into a prime (40804523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5821 + ... + 10746.

It is an arithmetic number, because the mean of its divisors is an integer number (6809448).

Almost surely, 2^40804521 is an apocalyptic number.

It is an amenable number.

40804521 is a deficient number, since it is larger than the sum of its proper divisors (13671063).

40804521 is a wasteful number, since it uses less digits than its factorization.

40804521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17391.

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 40804521 is about 6387.8416542679. The cubic root of 40804521 is about 344.2728393621.

The spelling of 40804521 in words is "forty million, eight hundred four thousand, five hundred twenty-one".