40521303 has 20 divisors (see below), whose sum is σ = 60951088. Its totient is φ = 26827200.

The previous prime is 40521289. The next prime is 40521329. The reversal of 40521303 is 30312504.

It is not a de Polignac number, because 40521303 - 2⁴ = 40521287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40521373) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10575 + ... + 13887.

Almost surely, 2^40521303 is an apocalyptic number.

40521303 is a deficient number, since it is larger than the sum of its proper divisors (20429785).

40521303 is a wasteful number, since it uses less digits than its factorization.

40521303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3476 (or 3467 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 40521303 is about 6365.6345323935. The cubic root of 40521303 is about 343.4744741811.

Adding to 40521303 its reverse (30312504), we get a palindrome (70833807).

The spelling of 40521303 in words is "forty million, five hundred twenty-one thousand, three hundred three".