40346521 has 2 divisors, whose sum is σ = 40346522. Its totient is φ = 40346520.

The previous prime is 40346497. The next prime is 40346543. The reversal of 40346521 is 12564304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32080896 + 8265625 = 5664^2 + 2875^2 .

It is a cyclic number.

It is not a de Polignac number, because 40346521 - 2²⁵ = 6792089 is a prime.

It is not a weakly prime, because it can be changed into another prime (40346561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20173260 + 20173261.

It is an arithmetic number, because the mean of its divisors is an integer number (20173261).

Almost surely, 2^40346521 is an apocalyptic number.

It is an amenable number.

40346521 is a deficient number, since it is larger than the sum of its proper divisors (1).

40346521 is an equidigital number, since it uses as much as digits as its factorization.

40346521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 40346521 is about 6351.8911357170. The cubic root of 40346521 is about 342.9799221560.

The spelling of 40346521 in words is "forty million, three hundred forty-six thousand, five hundred twenty-one".