40345001 has 2 divisors, whose sum is σ = 40345002. Its totient is φ = 40345000.

The previous prime is 40344971. The next prime is 40345021. The reversal of 40345001 is 10054304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37945600 + 2399401 = 6160^2 + 1549^2 .

It is a cyclic number.

It is not a de Polignac number, because 40345001 - 2¹⁰ = 40343977 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40345021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20172500 + 20172501.

It is an arithmetic number, because the mean of its divisors is an integer number (20172501).

Almost surely, 2^40345001 is an apocalyptic number.

It is an amenable number.

40345001 is a deficient number, since it is larger than the sum of its proper divisors (1).

40345001 is an equidigital number, since it uses as much as digits as its factorization.

40345001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 40345001 is about 6351.7714851843. The cubic root of 40345001 is about 342.9756150021.

Adding to 40345001 its reverse (10054304), we get a palindrome (50399305).

The spelling of 40345001 in words is "forty million, three hundred forty-five thousand, one".