40350521 has 2 divisors, whose sum is σ = 40350522. Its totient is φ = 40350520.

The previous prime is 40350491. The next prime is 40350529. The reversal of 40350521 is 12505304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30647296 + 9703225 = 5536^2 + 3115^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40350521 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 40350493 and 40350502.

It is not a weakly prime, because it can be changed into another prime (40350529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20175260 + 20175261.

It is an arithmetic number, because the mean of its divisors is an integer number (20175261).

Almost surely, 2^40350521 is an apocalyptic number.

It is an amenable number.

40350521 is a deficient number, since it is larger than the sum of its proper divisors (1).

40350521 is an equidigital number, since it uses as much as digits as its factorization.

40350521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 40350521 is about 6352.2059947706. The cubic root of 40350521 is about 342.9912562547.

Adding to 40350521 its reverse (12505304), we get a palindrome (52855825).

The spelling of 40350521 in words is "forty million, three hundred fifty thousand, five hundred twenty-one".