40105801 has 2 divisors, whose sum is σ = 40105802. Its totient is φ = 40105800.

The previous prime is 40105783. The next prime is 40105823. The reversal of 40105801 is 10850104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39879225 + 226576 = 6315^2 + 476^2 .

It is a cyclic number.

It is not a de Polignac number, because 40105801 - 2¹³ = 40097609 is a prime.

It is not a weakly prime, because it can be changed into another prime (40105861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20052900 + 20052901.

It is an arithmetic number, because the mean of its divisors is an integer number (20052901).

Almost surely, 2^40105801 is an apocalyptic number.

It is an amenable number.

40105801 is a deficient number, since it is larger than the sum of its proper divisors (1).

40105801 is an equidigital number, since it uses as much as digits as its factorization.

40105801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 40105801 is about 6332.9141001596. The cubic root of 40105801 is about 342.2964524836.

Adding to 40105801 its reverse (10850104), we get a palindrome (50955905).

The spelling of 40105801 in words is "forty million, one hundred five thousand, eight hundred one".