40054521 has 24 divisors (see below), whose sum is σ = 58267200. Its totient is φ = 24463296.

The previous prime is 40054519. The next prime is 40054559. The reversal of 40054521 is 12545004.

It is not a de Polignac number, because 40054521 - 2¹ = 40054519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40054561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100695 + ... + 101091.

It is an arithmetic number, because the mean of its divisors is an integer number (2427800).

Almost surely, 2^40054521 is an apocalyptic number.

It is an amenable number.

40054521 is a deficient number, since it is larger than the sum of its proper divisors (18212679).

40054521 is a wasteful number, since it uses less digits than its factorization.

40054521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625 (or 612 counting only the distinct ones).

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

The square root of 40054521 is about 6328.8641160954. The cubic root of 40054521 is about 342.1505014562.

Adding to 40054521 its reverse (12545004), we get a palindrome (52599525).

The spelling of 40054521 in words is "forty million, fifty-four thousand, five hundred twenty-one".