40521105 has 24 divisors (see below), whose sum is σ = 72137832. Its totient is φ = 21026304.

The previous prime is 40521037. The next prime is 40521109. The reversal of 40521105 is 50112504.

40521105 is a `hidden beast` number, since 40 + 521 + 105 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 26255376 + 14265729 = 5124^2 + 3777^2 .

It is not a de Polignac number, because 40521105 - 2⁹ = 40520593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40521109) 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, 10504 + ... + 13833.

It is an arithmetic number, because the mean of its divisors is an integer number (3005743).

Almost surely, 2^40521105 is an apocalyptic number.

40521105 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40521105 is a deficient number, since it is larger than the sum of its proper divisors (31616727).

40521105 is a wasteful number, since it uses less digits than its factorization.

40521105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24385 (or 24382 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 40521105 is about 6365.6189801150. The cubic root of 40521105 is about 343.4739147383.

Adding to 40521105 its reverse (50112504), we get a palindrome (90633609).

The spelling of 40521105 in words is "forty million, five hundred twenty-one thousand, one hundred five".